Element from the configuration that describes the kind of irregularity that can be raised for A-CDM.
Information concerning the status of a Ground Station
The class of the service.
The flight's cleared rate of climb.
The flight's cleared rate of descent.
The speed cleared from the controller to the pilot.
The range of speed cleared from the controller to the pilot.
The reason of tactical rerouting of the flight.
Indication of the rerouted state of the flight.
Indication on the allocation status.
Indication on the status of the slot improvement proposal.
The severity qualification of the ATFM hotspot.
Status of the ATFM hotspot.
Minimum visible range in meters for a flight to use slots in the corresponding constraint period.
The status of the ATFM measure.
Type of ATFM Measure.
A structured code indicating the reason for implementing an ATFM Regulation.
The category of ILS approach operations currently enabled for the runway direction.
An indicator of the general cardinal direction of the aerial refuelling procedure.
An affix placed before a route designator used to identify an aerial refuelling route.
The Tactical Air Navigation System (TACAN) UHF channel assigned to an aircraft receiving fuel to provide omnidirectional course and distance navigational information during air refuelling operations.
An indicator of the turn direction in an aerial manoeuvre (referred to as the Direction of Course Reversal Turn) performed by aircraft during aerial refuelling, where it can reverse its direction of course by turning around either right or left.
The Tactical Air Navigation System (TACAN) UHF channel assigned to the tanker aircraft to provide omnidirectional course and distance navigational information during air refuelling operations.
The type of aerial refuelling procedure based on its configuration.
The length of the aerial refuelling racetrack.
Distance between two parallel legs of the aerial refuelling racetrack.
The type of outbound course from the facility or waypoint on which anchor is based.
The lowest altitude or flight level at which refuelling operations can be performed.
Restricted speed for containment in a smaller pattern.
Direction of the turn.
The aerodrome conformity to applicable safety regulatory requirements.
The type of the primary organisation which controls the aerodrome.
The vertical distance above Mean Sea Level (MSL) of the highest point of the landing area.
The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
IATA classification of Airports according to level of activity and the need for coordination, such as the approval of planned operations by facilitators (at Level 2 airports) or the allocation of airport slots by coordinators (at Level 3 airports).
The mean lowest temperature of the coldest month of the year at an aerodrome.
The monthly mean of the daily maximum temperatures for the hottest month of the year at an aerodrome.
The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes.
The type of aerodrome.
A reference surface with respect to which elevations and/or depths are specified at the aerodrome.
An indicator of the availability of the aerodrome for specific flight operations.
A reason for caution when operating at the aerodrome.
An indication of the extent of the collocation situation of the two aerodromes.
Atmospheric pressure at aerodrome elevation. A pressure type altimeter calibrated in accordance with the Standard Atmosphere, when set to a QFE altimeter setting using this particular pressure value, will indicate the height above the aerodrome environment.
Q Code corresponding to the derived atmospheric pressure at Mean Sea Level, based on the atmospheric pressure at the reference point converted using the characteristics of the ICAO Standard Atmosphere.
The physical length of the protection area.
The physical width of the protection area.
The location of the marking on the aerodrome protection area.
An indication of the responsibility that the organization has over the facility.
The applicability of the sign.
The derivation method of the edge geometry.
The directionality of the edge.
The type of edge.
The type of node.
The operational status of the system/equipment.
Indicates which systems are published in AIP for the aerodrome.
A type of activity for which a aerodrome usage rule is specified.
The primary colour of the light source.
A classification of the light based on the kind of item that it visually identifies.
The type of air traffic flow management service provided.
Classification of aircraft according to specified basic characteristics, e.g. aeroplane, helicopter, glider, free balloon.
Indicates whether the Aircraft Characteristic concerns aircraft with larger or smaller number of passengers.
Calculated Acceleration of the target expressed in Cartesian co-ordinates
Calculated barometric altitude of the track.
The current flight level.
The type of avionic equipment.
The capability of the aircraft to report altitudes with a given resolution.
The capability of the aircraft to communicate or receive data.
Landing distance on dry surface.
The SSR and ADS capability of the aircraft.
The capability of the aircraft to report target trajectory change.
Landing distance on wet surface.
Classification of aircraft based on 1.3 times stall speed in landing configuration at certified maximum landing mass.
The class of a helicopter based on its performance during a critical power unit failure after take-off.
A grouping of aircraft according to the effect of the rotating air mass created behind the wing tips.
Aircraft classification depending on wake vortex separation.
The noise certification qualification - defined in chapter 2 - 13 in ICAO Annex 16 v1.
A classification of aircraft by wing span dimension. It can be used to indicate the size of aircraft that a taxiway can handle.
Minimum distance (safety requirement) between aircraft and side of building.
Interwheel distance.
The distance between the wing tips of the aircraft.
Indicates whether the Aircraft Characteristic concerns aircraft with larger or smaller wingspan.
Whether the aircraft is equipped.
Whether the aircraft equipment is operational.
The type of aircraft equipment.
The type of ground service.
The type of operator.
The air speed achieved.
The maximum ceiling achieved.
The status of the aircraft performance assessment.
Calculated rate of Climb/Descent of an aircraft.
Aircraft track velocity in cartesian coordinates as calculated by the tracker.
Indicated airspeed corrected for instrument errors and position error (due to incorrect pressure at the static port caused by airflow disruption).
The speed of the aircraft relative to the ground.
The uncorrected reading on the airspeed indicator.
Range of aircraft predicted ground speeds at a trajectory point.
Predicted rate of climb or descent of the aircraft at this point.
The pace at which the aircraft turns.
The speed of the aeroplane relative to undisturbed air.
An indicator identifying the characteristics of an aircraft stand.
A device used at the aircraft stand in order to help a pilot align and position an aircraft.
The attitude of the aircraft, derived from the attitude of the aircraft at the WayPoint at the end of the FlightSegment.
Classification of AircraftType.
The type of airframe equipment.
Scheduling season in which the airport slot is defined.
Code indicating whether the Airport Slot is for the Departure or the Arrival of the flight.
The type of supply distribution method: truck or hydrant.
Status of an aircraft at an aerodrome combining information about the outbound flight, the inbound flight and the turnaround process.
The time spent on the ground during a flight duty period between two flight sectors.
The primary organization type in terms of civil or military, providing air traffic services within a designated airspace.
An indicator of the general structure or characteristics of a particular airspace.
The primary situation or reason on the ground or in the air, which may have an impact on airspace usage.
The step of the airspace reservation phase from the military end user point of view.
The activation status of the airspace.
Information about the way the trajectory crosses the frontier between 2 ATC volumes belonging to different areas of responsibility.
Distance flown at the first entry of the flight in the airspace
The time at which the flight enters the airspace.
Distance flown at the last exit of the flight from the airspace
The time at which the flight exits the airspace.
An indicator of how the component participates in the aggregation, such as addition, subtraction or intersection.
Indication how the upper and/or lower altitude values should be interpreted.
The vertical distance of the lower bound of an airspace layer or block.
The vertical distance of the upper bound of an airspace layer or block.
A classification of airspace which determines the operating rules, flight requirements, and services provided.
The reason for the cancellation of the airspace reservation.
The line passing through the centre of an airspace volume having a corridor shape.
The vertical distance of the lower bound (floor) of an airspace volume.
The vertical distance of the maximum limit of an airspace volume.
The vertical distance of the minimum limit of an airspace volume.
The vertical distance of the upper bound (ceiling) of an airspace volume.
The width of an airspace volume having a corridor shape.
An indicator of the type of dependency between the geometry of the airspace volume and the geometry of the contributor airspace.
The status of the activation alert.
The severity level of the alert.
A code describing how the alert is triggered.
The real-time state of an altimeter source.
The adjustment value.
The ability to adjust the segment altitude.
The type of altimeter to which the adjustments are applicable.
The lower limit of the altitude range.
The upper limit of the altitude range.
A code indicating the direction of the zero bearing.
The angle expressed as compass direction.
A code indicating if the angle is to or from the significant point that is used.
The lowest altitude that an aircraft can receive signal.
The type of North reference.
The calculated altitude at the indicated point.
An indication of the point of the altitude measurement as reporting on a terminal procedure chart.
Indication of the final approach path.
Calculated distanced between the start and end point.
Indication of the ending point of the vertical or horizontal measurement.
An indication of the starting point of the vertical or horizontal measurement.
The altitude of the start point at the distance given, indicating the distance from the threshold for a specified descent altitude.
Classification of the approach lighting system using as criteria the International Civil Aviation Organization (ICAO) Annex 14 standards and recommended practices.
The overall length of the approach lighting system.
A regional or organisation specific classification of the approach lighting system equipment.
The speed of the aircraft used to calculate the time.
Indication of the starting point of the vertical or horizontal measurement.
The availability of the apron area for specific flight operations.
A reason for caution when operating at the apron area.
The length of the apron element.
The type of an apron based upon its location on an aerodrome and its general purpose.
The width of the apron element.
An indication of the part of the apron served by the lighting system.
An indication of the location of the marking relative to the surface of an apron.
The type of energy absorber by which a runway's arresting system rapidly dissipates the kinetic energy of a moving aircraft that engages the arresting system, bringing the aircraft to a stop.
The distance of the arresting system from the closest threshold of the runway /landing area.
The type of device that is used to engage an aircraft upon landing on a runway in order to immediately stop the aircraft by absorbing its momentum.
The overall length of the runway's arresting system.
The operational status of the arresting gear device.
The overall width of the runway's arresting system.
The reference type of the speed advised.
The value of the speed advised.
Horizon definition by radial distance
The intended operational use of a given horizon construct.
Speed of the aircraft when arriving at the node.
Time at which the aircraft arrives at the node.
A categorisation of the role that one organisation has for an aerial refuelling route.
A categorisation of the role that one organisation has for an airspace.
The level of responsibility of an organisation for a radio navigation aid.
The level of responsibility of an organisation for a special navigation station.
The level of responsibility of an organisation for a special navigation system.
Force per unit area exerted into a surface by the weight of air above that surface.
The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation.
The temperature to which a given air parcel must be cooled at constant pressure and constant water vapor content in order for saturation to occur.
The maximum air temperature.
The minimum air temperature.
Maximum distance at which an observer can see and identify an object on the same vertical as himself, above or below.
Time at which the boarding of the aircraft starts.
Relative location of the drop side, from startpoint to endpoint of line.
The type of aircraft capability.
The type of capacity.
A code indicating a direction with regard to a reference point.
A code indicating the type of angle.
Indication about the direction of the arc forming the circle sector.
Vertical distance range that is included in the sector.
The inner limit distance of the angle sector volume.
The outer limit distance of the angle sector volume.
The current status of the crossing.
Fraction of the sky covered by the clouds of a certain genus, species, variety, layer or combination of clouds.
Categorization of the cloud depending on its main characteristics.
The operational impact of the airspace over the route segment.
The status of the CTA negotiation process.
Location in latitude and longitude of the convection cell overshoot.
The observed variation of the altitude of the upper part convection cell.
Indication whether the convection cell described is the base (cell base) of a cell, or the upper part of a cell (cell top).
The state of coordination of the time and level at the coordination point.
The reason for coordination.
The reason for a non standard coordination.
The state of progress of the coordination and transfer of control process (between civilian ATSUs or between a civilian and a military ATSU or with an Oceanic centre)
Rate of climb/descent proposed during coordination dialogue.
Speed proposed during coordination dialogue.
The channel of the DME.
The distance from the DME antenna to the position where the zero range indication occurs in the DME receiver.
The frequency of a virtual VHF facility paired with the DME according to ICAO Annex 10, table A, ch.3.
The particular spectrum characteristics or accuracy of the DME.
Qualification of the planning stage where the information is coming from.
Allowable amount of variation in time, expressed symmetrically with regards to the time value.
Indication of how the time value should be interpreted.
The time when de-icing operations on an aircraft starts.
De-icing location.
Status of progress of the de-icing procedure.
The time when de-icing operations on an aircraft end.
The time when the aircraft is ready to be de-iced.
The departure clearance status.
The minimum altitude for a defined segment of flight that provides the required obstacle clearance.
The uppermost vertical position at the end point, when flying on the route portion in the direction indicated in the route portion usage.
The lowermost vertical position at the end point, when flying on the route portion in the direction indicated in the route portion usage.
The altitude for an en-route segment that provides adequate reception of relevant navigation facilities and ATS communications, complies with the airspace structure and provides the required obstacle clearance.
The instruction that may be given to a flight that cannot depart for an airport related reason.
The originator of the Departure suspension request (AO/APOP).
The reason associated to departure suspension.
The status of the suspension request: requested/canceled.
The distance from the significant point.
The type of distance indication.
The lower limit of the vertical distance range.
The upper limit of the vertical distance range.
The status of the emergency.
Transmitting or receiving frequency of the last two-way contact with the aircraft.
The type of emergency phase.
The type of gas emitted.
An indication of the type of aircraft engine.
The engine regime mode which is being operated, according to a certain flight phase.
Special unique identifier permanently assigned to an entity.
The capability of the airborne collision avoidance system.
The class B2 power transmission capability.
Indication whether the specified altitude/height is adjusted for the case when certain equipment is unavailable.
The guidance equipment which is inoperative
Adjustment for the corresponding visibility value.
Distance from the stop end of the runway to the Flight Path Alignment Point
Hexadecimal representation of the 32-bit CRC used to check the integrity of the FAS data block.
The width of the lateral course at the Landing Threshold Point (LTP). This width, in conjunction with the location of the Flight Path Alignment Point (FPAP) defines the sensitivity of the lateral deviations throughout the approach.
The type of the safety mitigation advice.
The reason for separation advice.
The type of separation advice.
The status of the current separation from lead indicator type.
The distance from the landing threshold point to the point where the extended runway centreline intersects the final approach course.
Indication whether the intersection of the final approach course with the extended runway centreline is located before or after the landing threshold point.
The distance between the final approach course and extended runway centreline at a point located 3000 ft from the landing threshold point, measured perpendicular to the extended runway centreline.
Indication on which side of the extended runway centreline the final approach course lies, when viewed from the Final Approach Fix.
Guidance system used on the final approach segment of an instrument approach procedure.
Landing system category.
The aerodrome temperature below which the use of Baro-VNAV is not authorized to the LNAV/VNAV DA.
A standard categorisation of the rescue and fire-fighting capabilities of an aerodrome on the basis of the length and fuselage width of the largest aircraft to be rescued.
A code indicating the standard referred to by the fire fighting category value.
Indication whether the flight information is real or a copy of a real flight (alternative or what-if flight).
An indication of the origin of the flight with regard to the national borders.
Preferring a southerly course deviation if a re-route is necessary.
The flight readiness status.
A property of the flight that requires ATS units to give it special consideration.
Status information for information management of the flight information.
A flight status for limiting the traffic count.
The type of the flight.
The capability of the aircraft and associated flight crew qualifications to communicate with ATS units.
The navigation capability of the aircraft and associated flight crew qualifications.
Indication about which Area Navigation requirements can be met by the aircraft while operating in the context of a particular airspace when supported by the appropriate navigation infrastructure.
Indication about which Required Navigation Performance requirements can be met by the aircraft while operating in the context of a particular airspace when supported by the appropriate navigation infrastructure.
A code qualifying a location (such as an airspace, aerodrome, point, etc.) when used as condition element.
The type of operation combining an elementary condition or a previously defined combination with other elementary conditions or previously defined combinations.
The mass of the aircraft at a specific time during the flight.
The barometric pressure reading used to adjust a pressure altimeter for variations in existing atmospheric pressure or to the standard altimeter setting.
Operating minima when special meteorological conditions exist.
The aircraft operator gives operational limitations to the ATSU for minimum approach speed. It is provided prior to flight activation in the ATSU.
The aircraft operator gives operational limitations to the ATSU for minimum manoeuvre speed. It is provided prior to flight activation in the ATSU.
The operational speed range of the aircraft.
Indication of where the change of flight level is to occur in relation to the assigned end position.
Time at which the change of flight level is requested to end.
Time at which the change of flight level is requested to start.
The lower bound of the flight level band to be occupied during the climb.
The true airspeed to be maintained during cruise climb.
The upper bound of the flight level band to be occupied during the climb.
Altitude at which an aircraft flies during the cruise phase.
The true airspeed at which an aircraft flies during the cruise phase.
The duration of the Flight Phase.
The time at which the flight phase ends.
Distance flown in the airspace
For Air Ground cooperative air traffic services and especially for Pilot Preferences Downlink services, this data is part of the Aircrew's preferences on the way the flight is to be conducted for various operational reasons. In order to elaborate pertinent control strategies, Controllers need to be aware of these preferences.
The aircraft operator expresses a preference to the ATSU for climb airspeed.
The aircraft operator expresses a preference to the ATSU for cruise speed.
The aircraft operator expresses a preference to the ATSU for descent airspeed.
The aircraft operator expresses a preference to the ATSU for rate of climb (unit : hundreds of feet per minute).
The aircraft operator expresses a preference to the ATSU for rate of descent (unit : hundreds of feet per minute).
The reason why an entity cancelled a flight at departure or aborted take-off.
The time at which the flight phase starts.
Identification of the phase.
The engine regime for a specific aircraft type in a specific flight phase.
A code indicating if the restriction is an interdiction or a mandatory routing.
A cruising level associated with a flight restriction.
A cruising level band associated with a flight restriction.
The value of the speed limit imposed on a routing element.
A code indicating whether the speed is a maximum, a minimum or an imposed value.
A code indicating the reference system for the speed value.
The new flight rules when the flight rules change is completed.
The new flight type when the flight rules change is completed.
The vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level.
The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the point.
The difference between the recorded horizontal coordinates of an entity and its true position referenced to the same geodetic datum expressed as a circular error at 95 percent probability.
A distance corresponding to the number of units or digits to which a measured or calculated value is expressed and used.
The difference between the recorded elevation of an entity and its true elevation referenced to the same vertical datum expressed as a linear error at 95 percent probability.
The set of reference points or a mathematical model of the Earth's surface (a datum) against which vertical position measurements are made as basis for measuring elevations.
A code indicating a type of fuel for aircraft and helicopters.
The gate may be reserved for domestic/national flights or for international flights (Schengen or not).
The Gate may be used for arrival, for departure, or both.
The type of geographical border.
The total duration of the ground handling of the aircraft.
The time at which Ground Handling services end for a flight.
The time at which Ground Handling services start for a flight.
An indication of the global colour of the ground lighting system.
An indication of the relative intensity of the ground lighting system.
An indication of the operational status of the ground lighting system.
The maximum ground speed permitted on a taxiway.
The type of guidance line on a taxiway.
The direction in which the guidance line can be used with reference to its geometry.
The type of heading.
Leg length for when holding is away the navaid.
Leg length for when holding is toward the navaid.
Minimum altitude allowed for all aircraft categories at all defined speeds.
Max altitude allowed for all aircraft categories at all defined speeds.
The minimum vertical distance, measured from a specified reference, allowed for all aircraft categories, at all defined speeds, operating in a holding procedure.
The type of outbound course to be observed.
The length of the holding pattern outbound leg.
Restricted speed for containment in a smaller pattern during holding operations.
An indicator of the turn direction in an aerial manoeuvre performed by aircraft during holding operations.
An indicator of the type of holding procedure.
The maximum vertical distance, measured from a specified reference, allowed for all aircraft categories, at all defined speeds, operating in a holding procedure.
Indication of how the holding is used on the approach segment.
An altitude referenced in the holding use instructions.
Visibility for aeronautical purposes is the greater of:
The direction of the minimum visibility relative to the reporting station.
The greatest visibility value, observed in accordance with the definition of "visibility", which is reached within at least half the horizon circle or within at least half of the surface of the aerodrome. These areas could comprise contiguous or non-contiguous sectors.
The frequency value of the glide path indicator.
The value of the ILS reference datum height.
Accuracy of the value of the ILS reference datum height.
The time that an aircraft arrives in-blocks.
The type of information service provided.
Additional equipment needed to fly the procedure.
Prefix used in support of current naming conventions.
The type of instrument approach procedure.
A suffix letter for circling only procedures.
One character code for multiple approaches of the same approach type.
An indication of the signal quality of the ILS course structure based on the location the precision signal is usable to.
The frequency of the ILS system.
The quality which relates to the trust which can be placed in the correctness of the information supplied by the ILS facility.
The signal performance level indicating the precision of the ILS system.
The concentration of the emitted substance. Is expressed in microgram per cubic metre or gram per kilogram.
The kind of emitted substance (i.e. gas)
An engine mode included in the LTO cycle.
Relative location of the holding side of a holding position, from startpoint to endpoint of line
The type of location being protected by the feature instance
Time at which an aircraft touches down.
The current status of the aircraft in the arrival management process.
The status of an airborne controlled lighting system when activated as the result of the number of clicks.
The intensity step of the airborne controlled lighting system activated by the pilot, depending on the number of clicks.
An indication of the colour of the lights in a light element group.
The intensity of the lights in a light element group.
The relative intensity of the lights in a light element group.
The source type of the light.
The position of the light element.
The type of light source.
The operational status of the light element.
A code indicating the usability of the localizer signal in the back course sector.
The frequency of the localizer.
The level at which the coordination is being done.
The status of the MCDM coordination.
Role of the actor within the MCDM coordination.
Approval status of the actor within the coordination.
The coordination level.
Role of the user category within the coordination.
The type of organisation involved in the MCDM coordination.
A code indicating the channel on which the Microwave Landing System is operating.
A code indicating if it is 'normal' or 'back' azimuth equipment.
An indicator of the availability of the facility for specific flight operations.
A reason for caution when operating at the facility.
The type of activity for which an area under air traffic control is specified.
The maximum weight at which the aircraft is certified for take-off due to structural or other limits.
An indication for the number of engines of an aircraft.
A code indicating the class of the radio marker.
The value of the radio emission frequency.
The quality of aerodrome protection area surface marking such as good, fair, poor and other.
Colour of the marking buoy at a seaplane landing area.
The type of the marking buoy at a seaplane landing area.
The colour of the marking element on an aerodrome surface.
The style of the marking element line, such as continuous, dotted, etc. on an aerodrome surface.
The amount of emitted substance.
The type of emitted gas.
The type of emitted particle pollutant.
The frequency of the MLS system.
The signal performance level indicating the precision of the MLS system.
The type of military flight activity, with a national specificity.
The lowest altitude an aircraft flies before making a decision to land or abort and take the missed approach.
An indication of the meaning of the altitude value.
The height value for the minimum
An indication of the meaning of the height value, such as obstacle clearance height or decision height.
The height value for the minimum used by militaries.
The visibility value applicable to the military height.
The height reported by a radio altimeter.
The minimum visibility needed to land at the airport when using the specified altitude and/or height.
Elevation of the missed approach surface at the missed approach point.
The types of missed approach.
The altitude for the alternate climb instruction.
Indicates the type of air-to-air engagement between the formations participating in the activity.
Speed of the movement of the meteorological phenomenon.
The class of the NDB.
The emission band for the NDB.
The frequency of the NDB emission.
A code indicating the position, in a navaid landing system, of the markers situated on the centreline of a runway.
The measured or calculated distance between a runway centreline point and a radio navigation aid.
The accuracy of the distance between a runway's centreline point and a specified radio navigation aid.
The operational status of the radio navigation aid.
The type of signal that is affected by the operational status.
The minimum cloud base needed when using the departure navigation area.
The minimum visibility needed when using the departure navigation area.
The type of navigation area that is defined.
The type of restriction area.
The type of nitrogen supplies for aviation usage.
Type of hydrometeor.
An indicator of the type of obstacle assessment surface that obstructing area represents.
The type of obstacle coverage area.
Highest of the minimum altitudes in controlling obstacles plus the altitude adjustments (operational factors).
The altitude at the bottom of the assessment area.
A description of the zones within obstruction identification surfaces (OIS).
The type of area being assessed.
The distance from a given point to the obstruction.
The obstacle position relative to the centreline.
The value of the minimum obstacle clearance altitude.
Required altitude adjustment above any obstacle or terrain within a defined safety buffer region.
The status of the clearance.
The cleared entry cruising speed of the aircraft in the Oceanic area.
Time at which the aircraft departs from its parking position.
Time at which the aircraft is ready for Off-Block.
The distance for the offset.
The side of the original route to which the aircraft is instructed to fly offset.
A code indicating a category of oil used in aircraft.
The official name of the telecommunication network on which a contact's online resource is located.
An indicator of the type of operations under the authority of the organisation.
An indicator of the nature of an authority in terms of its status or business role in air traffic management.
The kind of association between two organisations.
Altitude that the flight is requested to respect when flying over the point.
Speed that the flight is requested to respect when flying over the point.
The delay at the arrival point.
The time at which the fly over point event occurs.
The type of oxygen supplies for aviation usage.
Type of bridge used by passengers and crew to board and deplane an aircraft.
A code indicating the type of passenger facility/service available.
Amount of fuel burn in phase within specific timeframe.
The average fuel burn per flight for the phase within a specific timeframe. Is derived from the number of movements and amount of fuel burn for the phase within the specific time frame.
The baseline average fuel burn for the phase within the time frame.
The phase of flight.
The radio frequency to be used by the pilot for the activation of the system.
The intensity step/level of the lighting system when not in use.
Type of pilot controlled lighting service.
The area determined by the system use accuracy of the navigation aid(s) on which the fix is based, and the distance from the facility.
The error distance from the fix to the latest point where the fix may be received along the flight course.
The error distance from the fix to the earliest point where the fix may be received along the flight course.
The role of the defined point reference.
Type of the Position Marking.
Description of the precipitation characteristics using a classification.
The type of precision approach radar.
The set of rules followed when encoding the procedure legs.
Rules used in the design of the procedure.
Indication of the status of the procedure for flight planning/operations.
The type of procedure transition.
The type of qualification.
The applicable range of the equipment to detect aircraft.
Accuracy of the applicable range of the equipment to detect aircraft.
A description of how the component is powered if the primary power fails.
The type of service for the radar system.
A code indicating the type of emission, as defined at the 1979 ITU World Administrative Radio Conference.
The value of the reception frequency.
The value of the transmission frequency.
The type of communication channel.
A code indicating the role of the communication channel.
Indication of the eventual directionality of the communication channel.
The operational capability of the radio communication channel.
The type of signal that is affected by the usage limitation.
A code indicating the type of radio navigation aid limitation.
Indication of the intended usage of the radio navigation service.
The type of the radio navigation service.
Climb rate that the flight is requested to respect.
Descend rate that the flight is requested to respect.
The reason of the re-clearance.
The type of air traffic to be considered in case of aerodrome or aerodrome set.
Type of the reference location.
The type of reflector.
The action(s) for which the flight is released from agreed transfer conditions.
Height of the ridges of deposited material.
Distance of the ridge of deposited material from the edge of the movement area.
The side of the runway where the ridge of deposited material is located.
An indicator of the operational status of a service road.
Type of road at an aerodrome.
A prefix for the route designator, indicating whether the route is upper ATS, reserved for helicopters or reserved for supersonic flights.
The letter of the route designator, which may have special significance with regard to the route usage limitations, depending on the region.
Indication of the flight rules to be observed by aircraft.
A code indicating if the route segment is international or domestic.
The type of military training activity for which the route has been designed.
Indication whether the route is for exclusive use by military aircraft.
A suffix for the route designator, indicating alternates for homonymous routes.
The classification of the route.
The direction for which the usage is specified, expressed as compass angle.
The category of the conditional route according to the Flexible Use of Airspace rules.
The direction in which the route segment is considered when a specific usage is described.
The availability status of the route, in the direction indicated by the direction and/or cardinalDirection.
The distance from the start of the route portion to the position where change over occurs.
A suffix for the route designator defined in accordance with ICAO Annex 11.
The length of the path.
A code indicating if the route segment is in the upper airspace, the lower airspace or both.
The vertical position of the route segment floor.
Classification of the route portion for navigational purposes.
The type of segment path.
The turn direction, if any, at the end of the segment in order to continue on to the next segment of the same route.
The vertical position of the route segment ceiling.
The distance from the centreline of the route segment to the left edge, when considering the direction from the start point to the end point.
The distance from the centreline of the route segment to the right edge, when considering the direction from the start point to the end point.
An indication of the purpose of the rule or procedure.
A general heading by which the rule or procedure is usually identified in the Aeronautical Information Publications (AIP) or similar/related documents.
Accuracy of the value of the physical length of the runway.
A value specifying the longitudinal offset of the strip, when it is not symmetrically extended beyond the two runway ends.
The physical length of the strip.
The declared longitudinal extent of the runway for operational (performance) calculations.
The declared transversal extent of the runway for operational (performance) calculations.
The type of runway.
Accuracy of the value of the physical width of the runway.
A value specifying the lateral offset of the strip, when it is not symmetrically extended beyond the two runway edges.
The runway shoulder width.
The physical width of the strip.
The overall length of a barrier used to divert and/or dissipate jet and/or propeller blast.
The operational status of an aerodrome movement area related directly to the runway blast pad.
Atmospheric pressure at runway threshold elevation. A pressure type altimeter calibrated in accordance with the Standard Atmosphere, when set to a QFE altimeter setting using this particular pressure value, will indicate the height above the touch-down zone of the runway.
The temperature measured by a probe under the runway surface at the touchdown (TDZ) zone.
Length of runway cleared of contamination, if less than the total length of the runway.
The distance from the threshold of the runway direction having the lowest designator number to the point where the cleared portion starts, in case of partial clearance.
Indicates that the cleared width is offset left or right of a runway centre line.
Width of runway cleared of contamination, if less than the total width.
Length of runway that is expected to be cleared of contamination, if less than the total length.
Width of runway that is expected to be cleared of contamination, if less than the total width.
Indicates the side of the runway on which the lights are obscured by contamination.
The conventional operational distance declared for a runway direction.
The accuracy of the value of a conventional operational distance declared for a runway direction.
The type of a conventional operational distance declared for a runway direction.
The quality of the runway marking.
The type of runway direction marking related to landing categories.
A classification of the approach lighting system for a runway direction using as criteria Joint Aviation Requirements JAR-OPS 1. - Subpart E, Appendix 1 to 1.430.
The direction of the VFR flight pattern at an aerodrome for a runway direction.
Degree to which navigation aids provide accurate approach guidance for a runway direction.
The highest elevation of the runway touch down zone for a runway direction.
The accuracy of the reported touch down zone elevation of runway direction.
A indication of the part of the runway served by the runway direction lighting system.
An indicator of the placement of the element at a different height from another element.
The length of the runway element.
The type of runway element.
The width of the runway element.
Type of runway exit.
An indication of the location of the marking relative to the surface of a runway.
The runway mode defined for use of a runway direction in a given configuration.
The ILS category currently applicable for the runway direction.
The current use of the runway direction for flight operations in the context of a certain runway configuration.
The operational status of an aerodrome movement area, as a category.
A type of runway protect area.
An indication of the part of the runway served by the runway protect area lighting system.
Indicates the part of the runway that is affected. This supports indicating the contamination information on each third of the runway length, starting from the threshold of the runway direction having the lower designation number.
The position along the runway direction for which the Runway Visual Range (RVR) reading is provided.
When instrumented systems are used for the assessment of runway visual range, the variations in runway visual range during the 10-minute period immediately preceding the observation.
Value of the Runway Visual Range.
The relational operator that can be used for interpreting the RVR value, for instance in order to express a mean RVR of at least 2000 meters (ABOVE 2000 meters).
The category of code according to the type of flight.
The surveillance system used for the SSR code.
Type of mode S
The status of the SSR code.
The type of area.
Width of the secondary area used to evaluate the lowest usable altitude for obstacle assessment.
The state of agitation of the sea resulting from various factors such as wind, swell, currents, angle between swell and wind, etc.
The vertical distance between the trough and crest of a wave of operational significance.
The temperature of the ocean surface. The term sea surface temperature is generally meant to be representative of the upper few meters of the ocean as opposed to the skin temperature, which is the temperature of the upper few centimeters.
The type of search ad rescue service provided.
The transponder mode.
The termination altitude.
A code indicating the direction of the turn.
A code indicating how the altitude attributes of a procedure leg should be interpreted.
Alternate altitude when directed by Air Traffic Control.
The flight direction to/from the navaid providing the course guidance.
A code indicating the type of course to be observed.
An indication of the event that allows identifying the end of the leg and the start of the next leg on the procedure.
The type of flight path.
The type of 'path and terminator' as given in ARINC Specification 424, Attachment 5, Path and Terminator.
The length of the segment.
The lower limit altitude.
Indication how the speed attribute of a procedure leg should be interpreted.
The value of the speed limit on the procedure leg.
A code indicating the reference system for a speed value.
The direction of the turn.
The upper limit altitude.
Arrival separation mode (distance based or time based separation) used for arrival sequence.
The destination (arriving, departing, etc.) of the flights for which the information is provided.
The order of priority of the service, such as "primary" or "alternate".
Type of service available at an apron area, such as Marshal management service.
Type of service available at a stand, such as visual docking guidance system.
Indication of the operational capability of the service.
Indicates the position of the checkpoint; airborne or ground
The value of the distance from the checkpoint to the navaid.
The rules by which the significant point designator has been created.
The usage of a point when describing the Airspace or Base Infrastructure.
The lead DME , like the lead Radial, provides information for aircraft with single receiving equipment to change the receiver to the localizer or other facility providing the course guidance and to ensure the aircraft is within the clearance coverage area of LOC facilities before changing frequency or accepting on-course indication.
A code indicating the location of a significant point in relation to airspace.
An indicator of the type of position report required by an ATC Unit.
The recommended turn radius when continuing on the previous segment of the route (start point) or when continuing on the next segment of the route (end point).
The kind of special date.
The value of the emission frequency.
A code indicating the type of service within the chain.
The operational status of the special navigation station.
A code indicating the type of special navigation system.
The type of special SSR code.
The new speed when the speed change is completed.
The lower limit of the speed range.
The upper limit of the speed range.
A code identifying the column.
A specified cruising level, part of a column within a table of discrete cruising levels used by General Air Traffic.
The unit of measure used by the column.
A code indicating the flight rules observed by the aircraft.
A code identifying the table of discrete cruising levels.
Time at which the aircraft starts up.
Time the pilot requests start up clearance.
Time at which the Start-Up of the aircraft engines is approved.
Country codes as defined by IATA and ISO.
Nationality letters as defined by ICAO.
Role of a Country with respect to Nas.
The type of the predominant material of which a surface of the movement area is composed.
The method used to rate a runway pavement.
The maximum allowable tire pressure category related to the Pavement Classification Number (PCN).
An indication of the pavement subgrade strength related to the Pavement Classification Number (PCN).
The pavement behaviour (rigid or flexible) used for determining the Pavement Classification Number (PCN).
The preparation technique applied to a surface composition.
The quality of the surface of an aerodrome surface.
The maximum aircraft tire pressure that a movement area surface can support.
The maximum total value of the weight of an aircraft that a movement area surface may support, regardless of the landing gear configuration of the aircraft.
The maximum calculated load on each tire of a landing gear assembly that a movement area surface can support.
The depth of the contamination on the surface.
The type of equipment used to determine the friction coefficient of an aerodrome surface with contamination.
A qualitative estimate of the friction on an aerodrome surface with contamination.
The proportion of a runway surface that is contaminated by a contaminant, as a percentage of the total runway area.
Contamination extent.
The type of contaminating substance on the movement area surface.
Altitude for which the radar provides vertical coverage.
Distance for which the radar provides vertical coverage.
The type of life jackets available onboard the aircraft.
The type of survival equipment carried onboard the aircraft that can be used by the crew and passengers to assist survival in harsh environments in case of emergency.
The type of equipment carried onboard the aircraft that can be used by the crew and passengers to assist survival in harsh environments in case of emergency.
A code indicating the channel of the TACAN system.
The way the rerouting measure is to be applied.
The type of tactical rerouting constraint.
The status of the tactical rerouting proposal.
The status of the target take-off time.
Time at which the aircraft leaves the ground and becomes airborne.
The weight of the cargo of the flight.
The weight of the aircraft at the beginning of the take-off phase.
The taxi route mode.
Indication whether the taxi route is the planned one or the cleared one, which may be a deviation of it.
The type of movement (Taxi-in or Taxi-out) allowed along the TaxiRoute. A TaxiRoute connects a Stand and a Runway either to go IN the Runway or to go OUT from the Runway.
The length of the taxiway.
An indication of a type of taxiway.
The physical width of the taxiway.
The taxiway shoulder width.
The width of taxiway cleared of contamination.
An indication of the placement of the taxiway element at a different height from another element.
The length of the taxiway element.
The type of taxiway element.
The width of the taxiway element.
Type of landing operations for which that holding position is relevant.
An indication of the operational status of the taxi holding position.
The kind of lighting aid provided for the taxiway holding position.
The type of marking pattern used at this location
A code indicating the part of the taxiway surface the lighting system is serving.
An indication of the location of the marking relative to the surface of a taxiway.
How the entity state is to be interpreted.
The Terminal may be reserved for domestic/national flights or for international flights (Schengen or not).
The base type of the terminal arrival area.
The buffer size of the lateral or inner boundary.
The buffer size of the outer arc boundary.
Indication how the altitude attributes should be interpreted.
The type of waypoint over or by which the aircraft is required to fly.
The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the curve.
The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the surface.
The distance to the airspace entry boundary.
The distance to the flyover boundary.
An indicator of the day the timesheet is referring to.
An indicator of the days affected by the timesheet.
A reference to an event (like sunset or sunrise), the occurrence of which indicates when the period described in the timesheet ends.
When both the 'EndTime' and 'EndEvent' values of the timesheet are not blank, this attribute explains how the combination of the two attributes should be interpreted, i.e. which of the two moments in time is the end of the period described by the timesheet.
A reference to an event (like sunset or sunrise), the occurrence of which indicates when the period described in the timesheet starts.
When both the 'StartTime' and 'StartEvent' values of a timesheet are not blank, this explains how the combination of the two values should be interpreted, i.e. which of the two moments in time is the beginning of the period described by the timesheet.
An indicator of the time reference system or reference system offset for time values specified in the timesheet.
The physical length of the touchdown and lift-off area.
The physical width of the touchdown and lift-off area.
A indication of the part of the touch down and lift-off surface the lighting system is serving.
An indication of the location of the marking relative to the surface of a touch down and lift-off area.
The time at which the change of track direction occurs.
The traffic type considered by the traffic count.
The calculation type of the count.
Limitation of the traffic count to a particular flight status.
The type of air traffic service provided.
The role that a flow fulfils within a traffic volume.
Status information for monitoring the progression of the dialogue.
The category of flight rules with which the pilot intends to comply.
The type of trajectory.
The category of the trajectory constraint.
The open/closed status of the trajectory constraint.
The entity responsible for the trajectory constraint creation.
Rate of climb/descent to respect.
The state of acceptance of the trajectory constraint by the FDMP.
The True Airspeed for the first or the whole cruising portion of the flight.
The regulation, or combination of regulations, that governs all aspects of operations under which the pilot plans to fly that trajectory element.
The type of trajectory element.
The status of acceptance of the trajectory point by the FDMP.
Distance flown from a point of reference.
Cumulative track distance from take-off to that trajectory point.
Characterizes a point of the trajectory
A value used to indicate that only Direct Flight Segments (DCT) that exceed this value are concerned by a Flight Restriction.
The type of TrajectorySegment.
Heading assigned during transfer phase.
Rate of climb/descent assigned during transfer phase.
Speed assigned during transfer phase.
Pressure at the centre of the cyclone.
Maximum surface wind speed of a tropical cyclone.
The temperature of the tropopause.
The type of turbulence.
An indicator of the operational nature of the unit.
An indicator of the type of unit, usually related to the standard type of services provided by it.
The responsibility of the unit.
The role played by the unit.
An indicator of the operational status of a Unit in regards to its availability.
An indicator of the kind of dependency that a related unit has in relation to the unit.
Approved altitude based on unplanned holding assessment.
Indication whether the holding pattern is used as an unplanned holding.
The nature of the limitation which determines rules for usage of an aerodrome or one of its surfaces.
The value of the frequency.
A code indicating a type of VOR.
A code indicating the direction of the 'zero bearing' provided by the station.
Unit of measure
Allowable amount of variation in altitude.
Indication of how the altitude value should be interpreted.
The turn indicator.
Allowable amount of variation in speed.
Indication of how the speed value should be interpreted.
The reference surface for a height value.
ATM specific height type
The reference surface used for determining the value of the vertical distance.
Type of surface vehicle.
The overall length of the vertical structure.
The overall length of the radius of a vertical structure that has a relatively circular shape.
The type of vertical structure.
Overall width of the vertical structure.
The status of construction of the man-made object that constitutes the vertical structure part.
The principal colour of the marking of the vertical structure part.
The general layout of the external paint or another marking element, intended to increase the visibility of the vertical structure part.
The secondary colour for the marking of the vertical structure part.
The vertical distance of the highest point of the vertical structure measured from mean sea level.
An indicator of the type of vertical structure part.
The vertical extent of the vertical structure part.
Accuracy of the value of the declared vertical extent of the vertical structure part.
An indicator of the type(s) of material that compose the load-bearing structure and/or exterior facing of a vertical construction.
The minimum height of the aircraft cockpit over the threshold when the aircraft glide slope indicator is showing an on-slope indication.
A location, relative to a runway centreline, of the visual approach slope indicator for a final approach and take off area (FATO)/runway direction.
The type of visual glide slope indicator system installed, based upon the number, colour, and/or position of various components.
Mass concentration of ash in an ash cloud expressed in mass unit per volume unit.
Indication about the type of meteorological conditions changes.
Altitude of the lowest level of the description of a weather phenomenon.
Severity of a weather phenomenon.
Description of the type of a weather phenomenon.
A qualifier used in association with a reported significant weather phenomenon.
Altitude of the highest level of the description of a weather phenomenon.
The status of the alternative flight
The response to an alternative flight issued by an ATSU.
A wind blowing perpendicularly to one's direction of travel or orientation.
A wind blowing from directly in front, opposing forward motion or orientation.
The maximum speed of the wind.
The minimum speed of the wind.
Component wind gust in the upward or downward direction.
Variation from the mean surface wind speed as defined by ICAO Annex 3.
The speed of the wind.
Altitude of the wind.
Description of the wind characteristics.
Altitude expressed as a vertical distance where the wind shear occurs.
The type of work performed in the work area.
The report period for Category 021 reports.
The Service Status Reporting Period.
The Ground Station Status Reporting Period.
An identifier by which the ATC blind spot is labelled on airport maps.
The flight level an aircraft is cleared to maintain as specified by ATC.
The total count of regulations from which the flight is excluded.
Tolerance window (-5min/+10min) around the Calculated Take-Off Time (CTOT) at which the allocated flight has to adherence.
The time until it is allowed for providing an answer to the slot proposed.
Unique and immutable designator of the ATFM regulation within an AIRAC cycle.
The IATA delay code of the regulations due to this regulation cause.
Time window duration around the Estimated Time Over (ETO) within which the regulation does not delay a flight. In certain cases, the window is applied around the minimum Controlled Time Over (CTO).
The duration of the slot.
The number of aircraft allowed to approach the Active Runway Configuration per hour, taking all operational constraints into account.
A designator that identifies the aerial refuelling route.
An affix placed after a route designator used to qualify an aerial refuelling route.
An identifier by which the aerial refuelling route is known.
The setting to be used by the airborne navigation radar beacon during aerial refuel operations.
The setting to be used by the airborne identification radar beacon during aerial refuelling operations.
The course of the inbound leg.
The radial, course, bearing or magnetic directional course (if navaid is a localizer) from the facility or waypoint on which anchor is based.
The date when the aerodrome certification has been issued by the supervising authority.
The date when the aerodrome certification will become invalid.
The country where the airport is located.
The date on which an associated magnetic variation was measured at the aerodrome.
A designator for an aerodrome.
The identifier that is assigned to a location in accordance with rules (resolution 767) governed by the International Air Transport Association (IATA).
A four-letter code group formulated in accordance with rules prescribed by ICAO and assigned to the aerodrome.
The angular difference between True North and Magnetic North measured at a given position and date.
The accuracy of the magnetic variation.
The annual rate of change of the magnetic variation at a specified aerodrome.
The primary official name of an aerodrome as designated by an appropriate authority.
The lowest flight level available for use above the transition altitude.
An identifier by which the hot spot is labelled on airport maps.
Action to be taken by the crew and/or vehicle drivers when approaching a hot spot at the aerodrome.
Designator of the aerodrome set as defined by the Network Manager.
Textual description of the aerodromes which compose the aerodrome set.
The text and graphics appearing in the back message inscription of the sign.
The text and graphics appearing in the front message inscription of the sign.
The bearing from true north which the front message side of the sign faces.
Maximum surface normal angle (gradient) magnitude of terrain near the movement area
Maximum terrain elevation near the movement area
Mean terrain elevation near the movement area.
Minimum terrain elevation near the movement area
Standard deviation for terrain elevations near the movement area
Standard deviation for surface normal angles (gradient) of terrain near the movement area.
The name by which the ground light is known.
The specific setting of the flaps of an aircraft.
The specific setting of the slats of an aircraft.
A unique, alphanumeric string that identifies a civil aircraft and consists of the Aircraft Nationality or Common Mark and an additional alphanumeric string assigned by the state of registry or common mark registering authority.
The aircraft callsign for a military aircraft.
SELCAL code, for aircraft so equipped.
The colour of the aircraft.
Significant markings for the aircraft.
The direction in which the longitudinal axis of an aircraft is pointed, usually expressed in degrees from North (true, magnetic, compass or grid).
The direction of the track at the current aircraft position, usually expressed in degrees from North (true, magnetic or grid).
The number of aircraft which can be handled by the service.
The flight identification number.
The aircraft make.
The aircraft model name.
The aircraft series.
The identifier of the AircraftOperator as assigned by IATA.
The identifier of the AircraftOperator as assigned by ICAO.
Alliance partner.
The designator of an aircraft stand used to uniquely identify it at an aerodrome.
Percentage of the time where this stand configuration is used rather than another one for the same airport.
The IATA identification of an aircraft type.
The ICAO designator of an aircraft type as published in ICAO doc 8643.
Operational name or short description.
Operational name or short description. It is the name of an AircraftType as it might be encountered in field 18 TYP/ or as it is referred to in plain language. The first name in the list will be considered as the generic or primary name.
A description of the snow removal priorities.
Time allocated by the Slot Coordinator to the airport slot at which the movement can take place
Time requested by the Airspace User
Year in which the scheduling season starts.
A published sequence of characters allowing the identification of the airspace.
A type designator used locally inside a State or a Region for a particular airspace sub-category.
A four-letter code group formulated in accordance with rules prescribed by ICAO and assigned to the airspace.
The name given to an airspace by a responsible authority.
The minimum duration of an entry event in an Airspace before to leave the same Airspace, to be considered as a real entry event.
The minimum duration of an exit event out an Airspace before to re-enter in the same Airspace, to be considered as a real exit event.
A flight level that indicates the division of airspace between lower and upper airspace.
An indicator of the order of the component in an aggregation.
The angle between the bearing and the North reference.
The lower limit of the angle range.
The upper limit of the angle range.
The capability of an aircraft to climb with a certain gradient in take-off configuration.
The minimum navigation performance accuracy required in an airspace. It is the navigation performance accuracy of all the user and navigation system combinations within an airspace.
The duration of the flight between the start point and the end point.
The name or designator used to identify an apron at an aerodrome which has more than one apron.
An arrival management advisory in the form of the amount of time that a flight is supposed to lose or gain to arrive at the metering fix to land at the AMAN Planned Threshold Time (APTT).
Ground Delay proposed to be applied at the departure aerodrome in order to land at the AMAN Planned Threshold Time (APTT).
Horizon definition by remaining (estimated) time of flight
Amount of fuel burned per time unit during normal operations.
The time of the occurrence of the maximum air temperature.
The time of the occurrence of the minimum air temperature.
At a given pressure and temperature, the percentage ratio of the gram-molecular weight of the water vapour to the gram-molecular weight that the air would have if it were saturated with respect to water at the same pressure and temperature.
The agreed number of flights accepted to enter into a reference location per rolling hour beyond which coordinated actions may be considered between the concerned parties in order to better balance the traffic load.
The capacity value.
The angle from which the interpolation of the arc starts.
The angle at which the interpolation of the arc ends.
The name of the city.
Supplementary flight level.
Acceleration in g-value
Acceleration in metre per second squared.
An are is 100 square metres.
Acre
A centiare is 1 square metre.
An hectare is 100 ares (10,000 square metres).
Hectare
Ampere
Dyne
Kilogram-force
Pound
Long Ton is a British unit of weight equal to 2,240 pounds
Metric Ton is a metric unit of weight equal to 1,000 kilogram-force or 2,204.6 pounds
Newton
Short Ton is a US unit of weight equal to 2,000 pounds
GigaHertz
Hertz
KiloHertz
MegaHertz
Centimetre
Flight level in hundreds of feet.
Foot
Inch
Kilometre
Metre
Statute mile
Milimetre
Nautical mile
Flight level in tens of metres.
nit = candela per square metre
1 stilb = 1 candela per square cm
Candela, the base unit of luminous intensity.
Footcandle. A non-SI measure of light intensity
Lumen. The SI unit of luminous flux
Lux. The SI unit of measure for illumination of a surface
Gram
Kilogram
Pound-mass
Metric tonne (equals 1000 kg)
1 proton flux units = 1 particle/sr*cm2*s
1 proton flux units = 1 particle/sr*cm^2*s
Arcminute.
Arcsecond.
Degree.
Gradian
Radian.
Brake Horsepower
Gigawatts
Horsepower
Kilowatts
Megawatts
Shaft Horsepower
Watts
Standard Atmosphere.
Bar. (=100000 Pascals (Pa))
Hectopascal.
Inches of mercury
Millibar.
Millimetres of mercury
Mega Pascal.
Pascal.
Pounds per square inch.
Torr. (= mm of mercury (mmHg).)
Steradian
Degrees Celsius.
Degrees Fahrenheit.
Degrees Kelvin.
Day.
Hour.
Minute.
Month.
Second
Week.
Year.
Knots.
Mach number
Miles per hour.
Parts per billion, equivalent to microgram/litre(ug/L)
Parts per million, equivalent to milligram/liter (mg/L)
Parts per trillion, equivalent to nanogram/litre(ng/L)
Gallon
Litre
Millilitre
Ounce
Pint
Quart
The official name of the contact.
The official title of the contact.
The value of the measure that applies to that contour.
The value of the measure that applies to that contour. For example a pressure chart could have contours where each contour line represents a specific pressure value, this could be sorted in the contourValue.
Heading proposed during coordination dialogue.
The flight level at or above which, or, at or below which, the aircraft will cross the Boundary Point.
The flight level at which the aircraft will cross the boundary point.
The level at which the aircraft is likely to pass the boundary between two controllers' areas of responsibility while in evolution.
The time at which the flight is estimated, or calculated to pass, or actually passes, the coordination point.
The flight level at which a flight has been or will be co-ordinated to cross one point (flight level number), if in level flight, or the cleared level to which it is proceeding if climbing or descending at the boundary point.
The forecast duration of the de-icing procedure.
Tolerance in deicing time
Time to lose or gain.
The change which can be attributed to deicing.
The change in noise.
The full textual name of a designated point.
European permanent or blanket diplomatic clearance number for the calendar year or one or more national diplomatic clearance numbers.
A description of an action taken by an Air Traffic Service unit, in the event of search and rescue.
An issue in the communication between the ground and the flight.
The emergency reason.
Time at last reported aircraft position.
Time of the last two-way contact with the aircraft.
The value to use in the measurement.
The duration of the en-route delay.
The maximum rated thrust.
The corrected net thrust for the engine type.
The core engine exhaust pressure compared to the intake pressure.
Engine regime expressed as the ratio of the low pressure fan speed (%N1)
Engine regime expressed as the ratio of the low pressure fan speed (PercentN1)
Engine regime expressed by % of the maximum rated thrust for the engine type.
Engine regime expressed by Percent of the maximum rated thrust for the engine type.
The intended purpose of the data, whether that data is intended for publication, future development, research and development, or future predictions.
The lifecycle stage of data to enable controls, such as allowing or prohibiting changes to data that is in a specific status, or making data available to other systems when it is in a certain status.
The number of other equipments available at the airport for handicapped persons.
The number of wheel chair high loaders available at the airport.
Approach Performance Designator. A number from 0 to 7 that identifies the type of approach.
The first two designators of the ICAO location identifier, as identified in ICAO Doc 7910.
The radius of a circle in the horizontal plane (the local plane tangent to the WGS-84 ellipsoid), with its centre being at the true position, which describes the region which is required to contain the indicated horizontal position with the required probability for a particular navigation mode assuming the probability of a GPS satellite integrity failure being included in the position solution is less than or equal to E-4 per hour.
Operation Type. A number from 0 to 15 that indicates the type of the final approach segment.
Reference Path Data Selector (RPDS). A number (0-48) that enables automatic tuning of a procedure by LAAS avionics.
Reference Path Identifier. A four-character identifier that is used to confirm selection of the correct approach procedure.
Route Indicator. A single alpha character (A through Z or blank, omitting I and O) used to differentiate between multiple final approach segments to the same runway or heliport.
SBAS Service Provider Identifier. A number from 0 to 15 that associates the approach procedure to a particular satellite based approach system service provider.
Half the length of a segment on the vertical axis (perpendicular to the horizontal plane of WGS-84 ellipsoid), with its centre being at the true position, which describes the region which is required to contain the indicated vertical position with a probability of 1-E-7 per approach, assuming the probability of a GPS satellite integrity failure being included in the position solution is less than or equal to E-4 per hour.
The offset angle between the final approach course and the extended runway centreline.
The date of flight departure.
The estimated maximum length of time the aircraft can spend in the cruise phase of flight, determined by the amount of fuel at take-off.
The reference of a flight that is unique for all eligible members of the global ATM Community.
A unique flight plan identifier allocated by the IFPS.
Number of aircraft flying in a formation in which the aircraft are governed by one flight plan.
Value between 0 and 100 that the flight operator assigns to the aircraft to indicate a relative level or priority among its aircrafts arriving in a given airport in case of traffic, in order to assign delays.
For IFR flights, the estimated time required from take-off to arrive over that designated point, defined by reference to navigation aids, from which it is intended that an instrument approach procedure will be commenced, or, if no navigation aid is associated with the destination aerodrome, to arrive over the destination aerodrome. For VFR flights, the estimated time required from take-off to arrive over the destination aerodrome.
A sequence number used to indicate the order of the operand when composing the flight condition combination.
The fuel flow for the auxilliary power unit of aircraft at a specific time during a flight in terms of amount per time unit.
The fuel flow for the main engines of an aircraft at a specific time during a flight in terms of amount per time unit.
The actual flight number.
The flight number suffix.
The max_cruise_level is specific to this aircraft. It gives the flight envelope. It will be used by TP to correct the offline speed rules, etc. (could be in Aircraft or ground Trajectory)
The new flight level when the flight level change is completed.
Flight level at which an aircraft flies during the cruise phase.
The aircraft operator expresses a preference to the ATSU for cruise level.
The amount of auxiliary power unit fuel burn during the flight phase.
The amount of main engines fuel burn during phase of flight.
Operational concept parameters (e.g. ATC procedure) are affecting the aspects of the flight related to environment.
A coded value which identifies the restriction.
A description of the operational instructions which form the flight restriction.
A number in sequence used to indicate the order of the routing element in the flight restriction routing to which it belongs.
The designator of the stream condition.
Textual name.
Number of aircraft with the same aircraft type in the fleet of one unit
A statistical measure of the estimated confidence with which the data captured met its required accuracy. A required confidence level of 90% indicates that 90% of the measured point(s) should meet their respective accuracy requirements.
A statistical measure of the estimated confidence with which the data captured met its required accuracy. A required confidence level of 90Percent indicates that 90Percent of the measured point(s) should meet their respective accuracy requirements.
The difference between the recorded time of an entity and its true time.
The time corresponding to the point.
The textual designator of the gate.
The textual designator of the gate. For example, 13, 84 A, etc..
The name of the geographical border.
The geometry of the entity expressed as a curve which is a connected sequence of points.
The geometry of the entity expressed as the position of a point on the surface of the Earth.
The geometry of the entity expressed as a surface or area described by a closed line.
The geometry of the entity expressed as a volume.
The identifier of a guidance line on a taxiway.
Kilometres per hour.
The heading that the flight is requested to follow.
Number of the holding template.
The radial, course or bearing of the inbound leg as it pertains to a holding procedure.
Operational instructions that must be observed when flying the holding procedure.
The outbound course (for example, true track, magnetic track, heading, VOR radial, true bearing, magnetic bearing) from the significant point on which holding is based.
The duration of the holding pattern outbound leg.
Operational instruction concerning the use of the holding procedure in relation with a procedure.
The UTC scheduled date of departure of a flight.
The number of the attempt to operate a flight, if more than one attempt were conducted by the aircraft operator.
The code allocated to the aircraft.
The header that identifies the country of registration of the aircraft.
Accuracy of the glide path angle.
The angle of the glide path.
Ratio of growth of the ice deposit.
The identification of the agency that manages the identifier scheme.
The identification of the identifier scheme.
The identification of the version of the identifier scheme.
Operating channel of electronic transceiving equipment.
The final approach track value for copter procedures.
Operational instruction that must be observed for procedure turns and tear drops.
gram per kilogram
The fuel flow for an engine for a specific LTO engine mode. Expressed in kg/sec.
The tolerance with which the Target Landing time is required to be achieved by the Aircraft.
The name of the set of operational rules and procedures underlying the AMAN tool optimisation algorithm. The strategy implements the trade-off between the goals of equity, high throughput, and trajectory efficiency which has agreed between the stakeholders.
The position of a given aircraft in the Arrival Sequence, relative to other Aircraft and the runway threshold.
The time at which landing sequence management plans to freeze the sequence position of the flight
The way to execute the order.
Cleared flight level.
Altitude tolerance of the constraint.
The number of clicks on the microphone required for activation of airborne controlled lights at a particular intensity step.
The angular difference between True North and the station declination (Magnetic North - as indicated by the station).
The measured angle between the localizer beam and Magnetic North at the localizer antenna.
Accuracy of the measured angle between the localizer beam and Magnetic North at the localizer antenna.
The measured angle between the localizer beam and True North at the localizer antenna.
Accuracy of the measured angle between the localizer beam and True North at the localizer antenna.
The localizer course width, in degrees.
Accuracy of the localizer course width, in degrees.
The deadline to finish the coordination activities.
The deadline to finish the implementation activities.
The deadline to start the implementation activities.
Feet per minute
Metres per minute
The value of the angle from the zero indication direction within which the azimuth indication is usable, and left of this direction from the azimuth antenna.
The value of the angle from the zero indication direction within which the azimuth indication is usable, and right of this direction from the azimuth antenna.
The value of the angle within which the azimuth indication is proportional to the deviation from the azimuth zero indication direction, and left of this direction from the azimuth antenna.
The value of the angle within which the azimuth indication is proportional to the deviation from the azimuth zero indication direction, and right of this direction from the azimuth antenna.
The measured angle between the direction of the azimuth beam and Magnetic North at the azimuth antenna.
The measured angle between the azimuth beam and True North at the azimuth antenna.
Accuracy of the measured angle between the azimuth beam and True North at the azimuth antenna
Accuracy of the elevation angle.
The value of the lowest elevation angle authorized for an MLS procedure.
The normal glide path angle for the MLS installation.
The value of the span angle of the elevation transmitter signal between the lower and the upper limits.
The maximum number of passengers carried on an aircraft.
The Morse code transmitted by the beacon.
The true bearing of the minor axis of the marker beacon.
Official number of the marking buoy at a seaplane landing area.
A second climb-to-altitude provided on a missed approach based off the remote altimeter source.
Operational instructions that must be observed when flying the Missed Approach.
A free text name by which the mission is known.
Heading of the movement of a meteorological phenomenon.
A number identifying the collocation group to which the radio navigation aid belongs.
The organisation responsible for the special dates within the schedule.
Low to high gradient within the airspace.
Identifier for the safety regulations in effect within the zone.
A sequence number indicating a part of an assessment area.
The slope value of the extent.
The bearing from a given point to the obstruction.
The type of point referenced when determining the bearing and distance to the obstruction.
A value calculated by dividing 102.0 (a constant) with the angle of the glidepath.
Number of crossing occurrences of the sustained threshold within elapsed, before the Occupancy Traffic Monitoring Value (OTMV) triggers an alert.
Duration of the time window on which the crossing occurrences are counted.
Maximum duration beyond which a potential hotspot should be considered in case the occupancy count exceeds the sustain threshold.
Maximum number of flight that could be handled by a sector.
Acceptable number of flights that could be handled by a sector under specific circumstance, in particular if the duration of the overload is not too long.
The entry flight level of the aircraft in the oceanic area.
Time interval constraint to respect, with respect to an earlier flight.
The number of updates of TOBT after TSAT has been issued.
The address of the electronic mailbox of the responsible organisation or individual.
A contact's location (address) for on-line access using a Uniform Resource Locator address or similar addressing scheme.
The connection protocol to be used for accessing an contact's online resource.
The number of seats installed on the aircraft.
A mark assigned by the International Civil Aviation Organization to the common mark registering authority registering aircraft of an international operating agency on other than a national basis.
A distinguishing label, term, abbreviation or acronym used to identify an organisation, authority, agency or unit.
The full official name of the organisation.
A nationality symbol included in the radio call signs allocated to the State of Registry by the International Telecommunication Union.
A name identifying a Parking Configuration.
The elementary delay to be absorbed by a given ATSU traversed by the flight.
The fuel efficiency calculated based on baseline and current average fuel burn for phase. Expressed in percent.
The number of movements in this phase within a specific timeframe.
The timeframe used in establishing the phase fuel efficiency.
Operational instructions for controlling the lighting systems.
The duration the lighting is illuminated.
The number of intensity steps/levels for a particular type of lighting system.
The state or province of an organisation's or individual's physical address.
The city portion of the physical address for an organisation or individual.
The country name portion of the physical address for an organisation or individual.
The street address portion of the physical address for an organisation or individual.
The ZIP or other postal code portion of the physical address for an organisation or individual.
Total amount of precipitation measured over a defined period, expressed in mm/hours.
The glideslope angle at which the PAR provides landing assistance.
The accuracy of the glideslope angle at which the PAR provides landing assistance.
Operational instructions which must be observed in case of communication failure.
Operational instructions, other than communication failure instructions, which must be respected when flying the procedure.
The name of the instrument procedure.
Operational instructions that must be observed when flying the procedure transition part.
A heading provided for use, when a departure is designed to incorporate radar vectors at the termination point, in the event ATC instructions are not received prior to or at the termination fix.
A number identifying the collocation group to which the radar equipment aid belongs.
The date at which the magnetic variation had this value.
Accuracy of the magnetic variation.
The name of the equipment.
Serial number of the equipment.
The identifier broadcasted for a secondary radar.
The model of the equipment.
A specified code used for data link, for instance for logon to an ATS unit.
The value of the scalloping angle, which may affect the radial reading of a VOR or TACAN in plus or minus.
The year the magnetic variation was measured.
The identifying code given to the radio navigation aid.
The measured angle between Magnetic North and True North at the VOR, at the time the magnetic variation was measured.
The long name given to the radio navigation aid.
The coded identifier given to the radio navigation service.
The long name given to the composite radio navigation service.
Reference location designator as defined by the Network Manager.
Number of slots available for Microwave Landing System (MLS) equipped aircrafts per hour.
Number of slots per hour to be allocated during the slot allocation process. In Microwave Landing System (MLS) operations, this rate corresponds to the slots available for non-MLS equipped aircrafts.
Number of remaining free slots per hour after the slot allocation process is calculated used for later filers or during the slot improvement process.
The reference to the release request.
Time to insert aircraft in sequence
Time to remove aircraft in sequence
The designator or name of the service road.
The number of the route designator.
A description of the area in which the designated route is situated.
The name by which the route is known.
The initial magnetic track.
The required navigation performance for the route portion expressed in NM.
The reverse initial magnetic track.
The reverse initial true track.
The initial true track.
The definition of the actual content of the rule or procedure.
The designator of a runway, used to uniquely identify it at an aerodrome.
Free text field used to describe a runway configuration.
Name identifying a runway configuration.
Percentage of the time where this runway configuration is used rather than another one for the same airport.
A designator for one of the two possible landing and/or take-off directions of a runway or final approach and take-off area.
The measured angle between the runway direction and magnetic north at a given position.
Touchdown zone longitudinal slope (slope of 1/3 of the runway length from threshold or first 3000 feet for runways longer than 9000 feet) for a runway direction.
The measured angle between the runway direction and true north at a given position.
The accuracy of the measured angle between the runway direction and true north at a given position.
The number of aircraft allowed to approach the Runway Direction per hour, taking all operational constraints into account.
The time at which runway sequence management plans to freeze the sequence position of the flight
The position of a given aircraft in the time order of using the runway (runway mix sequence), i.e. relative to all other aircraft landing on or taking off from the same runway.
Metres per second
Millimetres per second
Feet per second
Four numerics giving the SSR code assigned to the aircraft by ATS.
Name of the sea.
The procedure design gradient.
The recommended bank angle of the aircraft on the turn.
The value of the course angle.
The duration of the segment.
The vertical climb angle of the aircraft on the procedure leg.
System Area Code identifying the region where the system is located
A free text name by which the service is identified.
Type of service available at a Gate.
The full textual service provider identification or call-sign for a particular frequency.
A code indicating the language in which the service is provided on a particular frequency, as associated with a particular call-sign.
The indication of a bearing (at a given point) by the measurement of the angle between the checkpoint and the navaid equipment (VOR).
The coded identifier of the significant point.
The lead radial provides information for aircraft with single receiving equipment to change the receiver to the localizer or other facility providing the course guidance and to ensure the aircraft is within the clearance coverage area of LOC facilities before changing frequency or accepting on-course indication.
Date at which the airport slot had been assigned to the flight.
The calendar date concerned.
The year concerned.
The name by which the date is known by the public (especially for public holidays).
The textual name of the station.
The designator of a special navigation system chain.
The textual name of the chain of a special navigation system.
Speed to be respected when flying over the point.
The designator of the STAR.
The designator of the SID.
The start angle of the sector relative to the North.
The end angle of the sector relative to the North.
The position of a given aircraft in the start up sequence.
The time at which start up sequence management plans to freeze the sequence position of the flight.
Number of extra free slots per hour to be added during short periods to the normal rate without triggering a recalculation of the slot allocation process.
A value which denotes the peak bearing moment the surface can handle repeatedly without shortening its service life.
The bearing strength of a pavement for unrestricted operations.
Indication that the estimated surface friction is unreliable and is not reported.
The average ratio of the weight of an object being moved along an aerodrome surface with contamination and the force that maintains contact between the object and that surface.
The time when it is expected to complete further clearance of an aerodrome surface with contamination.
The date and time of the next intended measurement of conditions on an aerodrome surface.
The date and time of surface contamination measurement completion.
The percentage of the contaminated area of the overall extent of the surface.
The order of the layer (starting from the uppermost, towards the movement area surface), in case overlapping contaminants are present.
A system in the air traffic control system using radar intelligence to detect and display pertinent data such as flight identification, altitude, and position of aircraft operating in the terminal area.
Angle at which the antenna is tilted.
Azimuth for which the radar provides vertical coverage.
The colour of the equipment.
The total number of persons which can be accommodated by the dinghies carried onboard the aircraft.
The number of the specific equipment available onboard the aircraft.
The angular difference between the direction of the 'zero bearing' indicated by the station and the direction of the True North.
The definition of a manual rerouting.
Designator of a proposed tactical improvement route.
Time to answer to the reroute proposed.
The number of passenger for the flight.
The total number of persons (passengers and crew) on board.
Number of traffic units for the flight. One traffic unit is equivalent to one passenger or 100Kg air freight or 10 kg air mail.
The time at which take-off sequence management plans to freeze the sequence position of the flight
The position of a given aircraft in the take-off sequence.
The intended position at the end of the taxi route.
The start of the taxi route.
A limitation applied to the taxi route.
The procedures applicable to the taxi route.
The taxi time for the taxi route.
The traffic situation.
The textual designator of the taxiway.
Free text field used to describe a taxiway configuration.
A name identifying a taxiway configuration.
Percentage of the time where this taxiway configuration is used rather than another one for the same airport.
The telephone number of a facsimile machine for the responsible organisation or individual.
The telephone number by which individuals can speak to the responsible organisation or individual.
End of life of the entity, indicating the date and time at which the entity ceases to exist
Date and time at which the data contained in the entity state ceases to be effective
Date and time when the data was last revised.
Name of entity or organisation that supplied data.
Start of life of the entity, indicating the date and time at which the entity starts to exist
Date and time at which the data contained in the entity state starts to be effective
Free text field used to describe a terminal.
A name identifying a terminal.
Number of arrival passport desks available at the terminal.
Number of bag security points available at the terminal.
Number of check-in desks available at the terminal.
Number of custom channels at the terminal.
Number of departure passport desks available at the terminal.
Number of gate rooms available at the terminal.
Number of luggage reclaim devices available at the terminal.
Number of levels for passengers at the terminal.
The lower limit of the time range.
The upper limit of the time range.
The time to the airspace entry boundary.
The time to the flyover boundary.
The end date of the validity of the timesheet.
The time of the day when the period described in the timesheet ends.
The number of minutes before or after the end event when the period described in the timesheet ends.
The start date of the validity of the timesheet.
The time of the day when the period described in the timesheet starts.
The number of minutes before or after the start event when the period described in the timesheet starts.
The designator of the touch down and lift-off area.
The slope (rate of upward inclination of the surface from the horizontal) of the surface of a touch down and lift-off area.
The track direction that the flight is requested to follow.
The new track direction when the track change is completed.
The duration during which the flights are counted.
The number of flights being counted.
The interval between count periods.
End of the count period.
The channel on which the data-link takes place, if applicable.
Designator of the traffic volume as defined by the Network Manager.
Designator of the traffic volume set as defined by the Network Manager.
Textual description of the traffic volumes which compose the set.
The reason under which the Trajectory request is rejected.
The reference of the clearance request for a 4D trajectory across an ATSU AoR.
The FDMP's reason for rejecting the trajectory constraint.
Duration to be added to the time at which the reference is reached for the determination of the application point of the constraint.
The planned cruising level for the first or the whole portion of the route to be flown.
Applicable special requirements to this trajectory element. This is an indicator that the flight is expected to be operating in accordance with regulations issued by the relevant State for aircraft operating as State aircraft, as per Article 3 of the Convention on International Civil Aviation (Doc 7300) and for aircraft operating in accordance with State regulations for non-standard flying activities, normally through the use of reserved airspace.
The estimated time required from take-off to that trajectory point.
Time elapsed since a point of reference.
The amount of fuel burn of the auxiliary power unit usage during flight segment.
Duration of the Trajectory Segment, derived from the eventTime and the eventEndTime.
The estimated time required to proceed from one significant point to another.
The fuelBurn for the FlightSegment, expressed in kg.
Average Fuel burn rate for the leg. Derived from the deltaFuelBurn for the WayPoints delimiting the FlightSegment.
The amount of fuel burn of the main engines during the flight segment.
Average rate of climb and descent for the leg (ft per minute), derived from rateOfAltitudeChange of the two Waypoints delimiting the FlightSegment.
Flight level assigned during transfer phase.
Supplementary flight level assigned during transfer phase.
Name of the tropical cyclone.
Eddy dissipation rate, characterization of atmospheric turbulence.
A distinguishing label, term, abbreviation or acronym used to identify the Unit.
A four-letter code group formulated in accordance with rules prescribed by ICAO and assigned to the ATS unit.
The full textual name of a unit, established according to the rules specified by International Civil Aviation Organisation (ICAO), and specifically in the official language of the country, transposed into the Latin Alphabet where necessary.
An indication that a prior permission is required before using the aerodrome movement area.
The angular difference between True North and the station declination.
Estimated accuracy (i.e. standard deviation) of the calculated acceleration in Cartesian co-ordinates
Estimated accuracy (standard deviation) of the measured altitude.
A regular expression constraining the datatype
Estimated accuracy of the velocity (Cartesian Coordinates).
The precision of the unit.
The precision of the unit. For degrees Celsius, it will be 1.
The direction of travel.
The name of the vertical structure.
A distinguishing label by which the vertical structure part is identified locally.
The number of units that compose the visual glide slope indicator system.
A descent angle determined by a visual glide slope indicator system for visual vertical guidance during the final approach of an aircraft.
The name of the volcano.
The time at which the forecast or observation process starts.
Quality of trusting for a forecast expressed as a percentage.
Relative likelihood of a forecast expressed as a percentage.
The reason for its rejection of an alternative flight.
The extreme clockwise direction from which the wind is blowing, inclusive.
The extreme counter-clockwise direction from which the wind is blowing, inclusive.
Direction from which wind is blowing.
Date when the activities in the construction area are expected to be operational.
An irregularity which normally requires one or more partners to make a manual intervention to resolve the irregularity.
A ground station that may automatically transmit and/or receive ADS-B data such as identification, position and additional data, as appropriate, in a broadcast mode via a data link.
Service for an ADS-B Ground Station
Information concerning the configuration of an ADS-B Ground Station service.
Validation of the reported position of the target by comparison with the angle of the arriving message
Validation of the reported velocity of the target by comparison with the position change since the last message
Validation of the reported target position by comparison of the amplitude of the signal with the calculated range of the target relative to the sensor.
Validation of the reported position of the target by evaluating the sequence of reception of the message by multiple sensors.
Validation of the reported target data by comparison with the data calculated by a WAM system.
Information concerning the status of an ADS-B Ground Station.
Indication that released data can be used in operations.
Indication that the data processor is overloaded.
Indication that ground interface data communications is overloaded.
Indication that the time source is valid.
A location on an aerodrome movement area that is not visible to ATC personnel due to obstructions and is not designated as a Hot Spot.
Authorization for an aircraft to proceed under conditions specified by an air traffic control unit.
The behaviour of the flight when concerned by ATFM Measures.
Indication that the flight is excluded from all regulations.
Indication that the flight was rerouted.
Indicator that the flight has been excluded from one or more regulations in the past but is no longer.
A calculated take-off time attributed by the central unit for ATFM with a time tolerance managed by the local ATS unit.
ATFM Slot amendment proposal in which a new Calculated Take-Off Time (CTOT) is provided which improves the original slot.
A time period on a traffic volume indicating that there is too much traffic according to occupancy counts or complexity analysis for a specific occupancy traffic count duration.
The actions taken to perform air traffic flow management and capacity management.
Indicates whether the measure has been created by an Flow Management Position (FMP) or not.
Indication whether the FMP is entitled to modify the ATFM measure.
Indication whether this ATFM measure is created for flight cherry picking whereby only the selected cherry picked flights are subject to the measure.
Indicates whether Measure Collaborative Decision Making (M-CDM) is required for this regulation.
An ATFCM measure implemented by means of a departure slot in order to balance traffic demand against available ATC capacity.
Indicates that a capacity update will be automatically applied according to the rates of the regulation.
Indication whether the flight must be confirmed in this regulation before trying to find a slot for this flight in the associated constraint period.
Indication that a traffic volume activation will be achieved according to the applicability period of the regulation.
A slot within a regulation defined according to the regulation rate and period.
Indicator that the slot is allocated.
The Runway Configuration that is currently used for flight operations in and out of the airport.
A procedure used by the military to transfer fuel from one aircraft to another during flight.
An indication that the aerial refuelling track supports simultaneous opposite direction aerial refuelling.
An indication that the aerial refuelling procedure is designed only for helicopter usage.
An indication that the aerial refuelling procedure supports special missions/sortie.
A prescribed pattern, established by air refuelling points, along which air-to-air refuelling of aircraft is performed.
A sequence of points that define the trajectory to be flown during an aerial refuelling operation.
A defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft.
An indicator that the aerodrome is no longer in operational use, but its infrastructure is still present and visible from the air.
The availability of a point or area designated at an aerodrome where the checking of an altimeter system can be accomplished.
The availability of a device that indicates visually the direction currently designated for landing and for take-off.
Indication whether the aerodrome is only for the use of the owners and not open for the public.
The availability of emergency power supply for the aerodrome.
The availability of a device at the aerodrome that indicates the direction and the intensity of the wind.
Information about the operational status of the aerodrome.
The sharing by two aerodromes of some or all of their ground facilities.
Weather observations and or forecast for an aerodrome
Visibility, cloud and present weather better than prescribed values or conditions.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on aerodrome surfaces.
A location on an aerodrome movement area with a history or potential risk of collision or runway incursion, and where heightened attention by pilots/drivers is necessary.
An area situated in the vicinity of a runway, Final Approach and Take-Off Area (FATO) or Touchdown and Liftoff Area (TLOF), provided to protect aircraft during manoeuvring, take-off and/or landing operations.
The availability of a lighting system that visually identifies the Protection Area in low visibility conditions.
An indicator that the protection area is obstacle free.
A symbol or group of symbols displayed on the edge of the landing protection area at an aerodrome.
The role of the organisation which is responsible for the aerodrome.
Set of aerodromes used in the scope of Air Traffic Flow and Capacity Management (ATFCM).
A sign presenting messages related to aircraft and vehicle movement.
A connected and directed graph defined by Node and Edge features that represents logical and physical connections between taxiways, runways and other features related to the movement area of an aerodrome.
A directional or bi-directional connection between nodes having an attached geometry which can be used for a graphical depiction of the taxi route.
Representation of the intersection of two or more aerodrome features related to taxi operations, or other special location such as holding position or entry or exit to a parking area.
A system at an aerodrome.
The terrain near an aerodrome.
A rule governing the functions that may be performed on an aerodrome.
A light specifically provided as an aid to air navigation, with the exception of obstacle lights and lights forming part of surface or approach lighting systems
An indication whether the light is steady or flashing.
A particular combination of the positions of the moveable elements, such as wing flaps and landing gear, etc. that affect the aerodynamic characteristics of the aeroplane.
The specific setting of the airbrakes of an aircraft. TRUE means deployed, FALSE means retracted.
The specific setting of the landingGear of an aircraft. TRUE means deployed, FALSE means retracted.
A company or individual involved in the various aspects of designing, building, testing, selling, and maintaining Aircraft, aircraft parts, missiles, rockets, and/or spacecraft.
A service provided for the purpose of:
The provision of flight planning and flow management operations.
Any machine that can derive support in the atmosphere from the reactions of the air other than the reactions of the air against the earth's surface.
The acceleration of the aircraft at a given point of the trajectory.
The altitude of the aircraft at a given point of the trajectory.
Any electronic device - including its electrical part - for use in an aircraft, including radio, automatic flight control and instrument systems.
The ability of an aircraft or an aircraft equipment to provide a service or perform a function that, either on its own or with other services or functions, can deliver a definable level of performance. This level of performance is measurable within a framework of performance indicators and safety requirements.
The aircraft categorization according to a set of criteria.
The colours of the aircraft and a description of the aircraft's significant markings.
An arrangement of one or more aircraft equipments in a particular form, figure, or combination.
The measurable extent of an aircraft.
The direction of the aircraft at a given point of the trajectory.
Articles, including first-aid and survival equipment and commissary supplies, but not spare parts or stores, for use on board an aircraft during flight.
The availability of maintenance, support and/or supply operations to aircraft at an aerodrome.
A group of letters, figures or a combination thereof which is either identical to, or the coded equivalent of, the aircraft call sign to be used in air-ground communications, and which is used to identify the aircraft in ground-ground air traffic services communications.
Aircraft model, make and series information as provided by the manufacturer.
A person, organization or enterprise engaged in or offering to engage in an aircraft operation.
The performance delivered by an aircraft.
The speed of the aircraft at a given point of the trajectory.
A designated area on an apron intended to be used for parking an aircraft.
Configuration of aircraft stands available for use in a given airport operational mode.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. at an Aircraft Stand.
A vector describing the current state of an aircraft or a vehicle, e.g. position, speed, acceleration.
The type of an aircraft.
Indication if it concerns a cargo aircraft type.
An individual component of the body of an aircraft as distinct from its engine.
An airport ground service providing clearance capabilities for airport surfaces.
Services that provide maintenance of the airport infrastructure and direct support to aircraft on the ground.
The scheduled time of arrival or departure available for allocation by, or as allocated by, a coordinator for an aircraft movement on a specific date at a coordinated airport. For scheduling purposes, the slot is the scheduled time of arrival or departure at the terminal, not the time of landing or take-off from the runway. An allocated slot will take account of all the coordination parameters at the airport e.g. runway(s), taxiways, aircraft parking stands, gates, terminal capacity (e.g. check-in and baggage delivery), environmental constraints e.g. night restrictions etc.
A service that provides supplies (fuel, oil, oxygen, etc.) to aircraft.
The path and operations linked to an aircraft during its "visit" to the airport. It starts at the Initial approach fix (STAR) and includes the taxi-in segment, the turn round processes from the airspace user, the taxi-out segment and ends with the handover to the TMA departure controller at the SID.
A defined three dimensional region of space relevant to air traffic.
An indicator whether the airspace should be considered as one continuum and used flexibly on a day-to-day basis.
An indicator of whether an airspace designator is recorded in ICAO Doc. 7910 'Location Indicators'.
An indicator whether the airspace is manageable at the strategic level.
An indicator whether the airspace is manageable at the pre-tactical level.
An indicator whether the airspace is manageable at the tactical level.
Information about the operational status of the airspace.
An indication that the airspace has been activated for exclusive use. If false, it indicates that the airspace has been activated for specific use.
Weather-related observations and forecasts of relevance to an airspace.
The event of entering an airspace.
The event of exiting an airspace.
The role of the component in the airspace geometry.
The portion of airspace between two specified vertical levels.
The airspace class for a portion of airspace between two specified vertical levels.
The procedure through which a volume is temporary reserved for an activity.
An indication that the airspace reservation has been cancelled.
A defined volume in the air, described as horizontal projection with vertical limits.
The relationship between the geometry of an airspace volume and the geometry of another parent airspace.
Indication of an actual or potential hazardous situation that requires particular attention or action.
An instrument which measures vertical distance with respect to a reference level.
Indication whether the altimeter is primary.
Indication whether the altimeter is remote.
The operational status of an altimeter source.
Operational factors applied to obstacle clearance altitudes to produce the safest usable altitude.
Indication if the altitude adjustment is based on a local or a remote altimeter.
The area of variation of an altitude between upper and lower limits.
An angular reference from a significant point.
The area of variation of an angle between upper and lower limits.
The role of the angle indication in the point reference.
Indication whether the angle indication provides the course guidance for the segment.
Altitude not defined by a segment that is to be depicted on the profile view, such as the height above touchdown for ILS CAT II approaches.
The final approach condition that must be met to use the set of minima.
Distance not defined by a segment that is to be depicted on the profile view, such as the height above touchdown for ILS CAT II approaches.
A portion of a terminal approach procedure as defined by two consecutive significant points.
An airport lighting facility which provides visual guidance to landing aircraft by radiating light beams in a directional pattern by which the pilot aligns the aircraft with the final approach path for landing.
An indication that a runway alignment indicator is available for the approach lighting system.
An indication that sequenced flashing is available for the approach lighting system.
Table of timings usually between final approach fix and the missed approach point.
A defined area, on a land aerodrome/heliport, intended to accommodate aircraft/helicopters for purposes of loading and unloading passengers, mail or cargo, and for fuelling, parking or maintenance.
An indicator that an apron is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.
Information about the operational status of an element situated in an aerodrome apron area.
A rule governing the usage of an element situated in the apron area.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on the Apron surface.
A part of a defined apron area.
An indicator of the availability of docking station system at an apron element.
An indicator of the availability of ground power at an apron element.
An indicator of the availability of jetway at an apron element.
Availability of towing service at an apron element.
The lighting system provided for illuminating apron areas of an aerodrome.
A symbol or group of symbols displayed on the surface of an apron of an aerodrome.
A series of devices (for example: engaging or catching devices and energy absorption devices) that are used to stop an aircraft by absorbing its momentum in a routine landing, emergency landing or aborted take-off.
An indicator of whether or not both runway directions utilise arresting gear which consists of a series of devices used to stop an aircraft by absorbing its momentum.
The event of entering an arrival management airspace.
A segment leg designed in accordance with the rules for arrival feeder segments.
A portion of an arrival procedure (STAR) as defined by two consecutive significant points.
An arrival management advisory to a flight to achieve its landing at the AMAN Planned Threshold Time (APTT).
A geometrical distance, flight time or set of airspace segment or points related to a Significant Point and used to define the geographical scope of an AMAN operation.
The set of flight operations following procedures associated with the destination aerodrome.
The declaration that a flight is following a missed approach procedure.
Identifier of the lead and the following aircraft for a pair in the arrival sequence.
The event of arriving at an aerodrome surface routing network node.
The type of authority that the organisation has over the aerial refuelling route.
The responsibility that one organisation has for an airspace.
A self-contained power-unit on an aircraft providing electrical/pneumatic power to aircraft systems during ground operations.
Weather observations and or forecast for a specific aeronautical location or airspace volume.
The boarding of an aircraft for the purpose of commencing a flight, except by such crew or passengers as have embarked on a previous stage of the same through-flight.
A structure forming or carrying a road over a river, a ravine, etc., or affording passage between two points at a height above the ground.
Line representing the side extent of aerodrome feature(s) associated with the vertical drop section of an overpass.
A particular aircraft capability.
Indication whether the aircraft has this type of capability.
The maximum number of aircraft that can be accommodated in a given time period by the system or one of its components (throughput).
A 3D pattern based on start angle, stop angle, inner distance, outer distance and upper/lower altitude.
The area in which aircraft circle to land under visual conditions after completing an instrument landing approach.
A (sub)sector used to restrict flight within a circling area.
A town or other inhabited place.
The agreed and proposed civil military crossing conditions of an aircraft.
A hydrometeor consisting of minute particles of liquid water or ice, or of both, suspended in the free air and usually not touching the ground. It may also include larger particles of liquid water or ice and non-aqueous liquid or solid particles such as those present in fumes, smoke and dust.
Indication that cumulonimbus clouds or towering cumulus clouds are detected by the automatic observing system but the cloud amount and the height of cloud base cannot be observed.
Surrounded, or part of a wider cloud layer, in opposition to isolated.
No clouds are detected by the automatic observing system.
No clouds of operational significance are detected by the ceilometer(s) in reports from fully automatic observing systems.
Hidden or out of sight by haze, smoke or cloud for example.
Affecting a large area.
A code indicating the capability of the airborne collision avoidance system.
A code describing the type of A-CDM irregularity.
Information concerning the status of the Service provided by a Ground Station
A classification of a horizon in terms of its operational use in arrival management.
A code indicating the status of eligibility of a flight for the AMAN processing.
A code indicating the type of position report required by an ATC Unit.
A code indicating the severity of an ATFM hotspot.
A code indicating the status of an ATFM hotspot.
A code indicating the status of an ATFM measure.
Type of the ATFM Measure.
A prefix for the designator of the Aerial Refuelling route.
A code indicating the type of aerial refuelling pattern.
A code indicating the extent of collocation between two aerodromes.
Directionality of the edge.
Derivation method of edge geometry.
Type of ASRN edge.
Type of ASRN node.
Indicates which operational systems are published in AIP for the aerodrome.
A code describing the type of air traffic at an aerodrome.
A code specifying whether a particular entity occurrence is an Airport or a Heliport.
A list of codes indicating the type of air-to-air mission.
A list of codes used to designate type of air traffic services.
A code specifying the air traffic views for which traffic count information is established.
A code indicating a type of airframe equipment.
The attitude of the aircraft in flight.
A code indicating a type of aircraft avionics.
A list of aircraft capabilities.
An aircraft characteristic that can be used as classification criteria.
A coded indication for the number of engines of an aircraft.
A code indicating the type of aircraft engine.
A code describing types of aircraft equipments.
A code indicating a type of service provided to aircraft on the ground.
Classification of aircraft based on 1.3 times stall speed in landing configuration at maximum certified landing mass.
The type of aircraft operator.
A code indicating the type of stand.
A code indicating a type of aircraft survival equipment.
A grouping of airplanes based on wingspan.
Party contributing to an airport collaborative decision making process
The distinct movement types at an airport are departure and arrival. Movement is a generic term for either of them.
A code indicating a reason for caution in airport operations. For example, work in progress on a runway.
A code indicating the primary activity taking place in the airspace or the reason for its establishment.
An 'operator' in coded form according to which two 'operands' will be 'associated' in order to produce a result.
A coded list of values that which determines the operating rules, flight requirements, and services provided in an airspace. According to Annex 11, Appendix 4.
A code indicating the extent of dependency relation between an AirspaceVolume and another Airspace.
A list of coded values indicating the operational impact of the Airspace over the route segment.
A coded list of values indicating steps of the Airspace reservation process, from the military end user point of view.
A coded list of values that indicates a type of airspace.
A code describing the activation status of the alert.
A code describing the severity level of the alert.
A code describing how the alter is triggered.
Whether an alternative flight is accepted by the downstream ATSUs or not.
The status of alternative flights (what-if flights).
The type of altimeter.
A code indicating the type of adjustment used to produce a usable altitude.
A code indicating the capability of the aircraft to report altitudes with a given resolution.
A code indicating, in situations where both an upper and a lower altitude may be specified, how the altitude information should be interpreted.
A code indicating the additional equipment needed to fly the procedure not listed in approachType
Classification of the approach lighting system using as criteria the ICAO Annex 14 standards and recommended practices.
A regional or organisation specific classification of the Runway approach lighting system equipment. Could also be a brand name.
Code indicating the prefix used in support of current approach procedure naming conventions
A code describing the type of instrument approach procedure.
Indicates an approval code
A code indicating a location on the surface of an apron. For example: apron edge.
A code indicating the direction of an arc (clockwise or counter clockwise).
The type of energy absorber (for example: a rotary brake) by which the arresting gear system rapidly dissipates the kinetic energy of a moving aircraft that engages the arresting system, bringing the aircraft to a stop.
A code indicating the type of device (for example: a hook) that is used to engage an aircraft upon landing in order to immediately stop it.
Codes used to denote the separation modes for arrival sequence distance computation.
A code indicating the role of the OrganisationAuthority for the aeronautical feature.
A code indicating the type of responsibility that one organisation/authority has for an aeronautical feature (for example, an airspace).
A code indicating the standard referred to by a list of values, in case where different aviation authorities use different categorisation criteria.
A code indicating the type of angle: magnetic, bearing, VOR radial.
A code describing how the boundary between two ATC volumes will be crossed.
Code indicating the type of Buoy
A code indicating the possible statuses of the CTA negotiation process.
A code indicating the type of capacity.
A code describing the type of meteorological conditions changes.
The position of the checkpoint; airborne or ground
The status of the crossing.
A code indicating the class B2 power transmission capability.
Amount of cloud - assessed by category.
A code describing the types of cloud.
A list of colours.
A code indicating the capability of the aircraft and associated flight crew qualifications to communicate with ATS units.
A coded indicator for the directionality of a communication channel.
A coded indicator for the type of communication channel.
A list of comparison operators.
The main points of the compass.
The type of conditional route, according to the Flexible use of Airspace rules.
The list of categories for a trajectory constraint.
A code describing the open/closed status of a trajectory constraint.
The constraint origin.
A code indicating the types of substances which can contaminate aerodrome movement areas.
A code describing the dynamic behaviour of the top of a convection cell.
A code indicating whether a convection cell described is the base (cell base) of a cell, or the upper part of a cell (cell top).
The state of progress of the coordination between civilian ATSUs or between a civilian and a military ATSU or with an Oceanic centre.
The reason for a coordination to have been :
A code describing the traffic count's calculation types.
A coded value indicating the signal quality of the ILS course structure based on the location the precision signal is usable to, according to ICAO Annex 10, Volume I, Chapter 3.
A code indicating the channel of a DME.
A code indicating the type of UHF distance measuring equipment.
A code indicating the capability of the aircraft to communicate or receive data.
A list of the days of the week.
A code indicating the type of conventional declared distance for a runway.
The progress status of the de-icing procedure.
The progress status of granting of the departure clearance.
This enumerated class holds the possible values for the status of a Departure
A code indicating the rules used to design and evaluate terminal procedures
A code indicating the direction of a turn.
A code indicating a 1-dimensional direction, for example, forward or backward.
Coding indicating the type of distance indication.
A code describing the status of an emergency.
The type of emission band
A code describing the operating mode of the engine.
Presumably meant to indicate the operational status of the additional equipment. Could be considered, if we are going to include the current operational status of equipment as well as the status as indicated in the flight plan.
An indication, for any type aircraft equipment, whether the aircraft is equipped, not equipped or the equipment status is unknown.
A code to indicate the type of unavailable equipment
A code indicating the status of the flight for information management of the flight information.
The order of priority of a facility, within a range of similar facilities. For example, "primary", "secondary" or "alternate".
Indication about the category of flight rules with which the pilot intends to comply.
Codes describing the guidance used on the final approach segment of an instrument approach procedure.
A code indicating the category of the fire fighting service provided at the aerodrome/heliport.
The type of flight crew qualification.
A code distinguishing real flight information from copies of it (alternative or what-if flights).
A coded list of values indicating the source of a flight (local, national, international, etc.)
The type of flight phase.
Indication about the readiness status of the flight.
The regulations that govern all aspects of operations under which the pilot flies.
A list of values that designate the intentions of a flight in relation with a location, such as arrival, departure or over-flight.
A code indicating the status and/or origin of a flight in the NM system.
The Type of the flight.
Code indicating the role a flow fulfils within a traffic volume.
A code indicating the types of equipment used to determine the friction coefficient on an aerodrome movement area.
A code describing the qualitative estimates of the friction on a movement area.
A code indicating the category of fuel available at an aerodrome/heliport.
A list of gas types.
A list of coded values that indicate the placement of an element at a different height from another element.
A code indicating a type of aeronautical ground light.
A code indicating the type of guidance line.
Indication whether a heading is absolute or relative.
A code indicating the reference surface for a height value, especially for approach procedures related heights.
A code indicating the performance class of a helicopter.
A code indicating the type of holding procedure.
A code to identify the holding is used by a segment
IATA classification of Airports according to level of activity.
The list of IATA Country Codes.
Scheduling season as used by the commercial aviation industry.
The airport conformity to applicable safety regulatory requirements. An airport may have received ICAO certification or not and it may have received it with some exceptions not detailed here.
The list of ICAO Nationality Letters.
A code indicating the usability of the localizer signal in the back-course sector.
The instruction that may be given to a flight that cannot depart for an APOP/DEP reason.
A description of the types of instrument approach.
A description of the types of runway intended for the operation of aircraft using instrument approach procedures.
A coded value indicating the quality which relates to the trust which can be placed in the correctness of the information supplied by the ILS facility, according to ICAO Annex 10, Volume I, Attachment C.
A code indicating the intensity level of the lighting when not in use.
Indication about the type of domestic or international flight.
A code classifying the trajectory of a segment path.
A series of predefined levels.
A code identifying the table of discreet cruising levels.
A code indicating the level: upper airspace, lower airspace or both.
The type of life jackets available on board the aircraft.
A coded list of light signs provided for a taxiway holding position.
A code indicating the intensity level of a light source.
A code indicating a type of light source, such as strobe or flood.
A code indicating the activation / deactivation of a system following a specific command.
Classification of the approach lighting system using as criteria JAR-OPS 1 - Subpart E, Appendix 1 to 1.430]
An coded list of values that indicate types of passenger loading bridges.
A code qualifying a location (such as an airspace, aerodrome, point, etc.) in relation with a flight or with its availability.
This indicates the location where the aircraft will de-ice. it can be at its stand or at a de-icing platform.
A boolean operator.
A code indicating the approval status within MCDM.
A code indicating the level at which the MCDM coordination is being done.
A code indicating the status of an MCDM coordination.
A code indicating the type of azimuth equipment: normal or backward.
A code indicating the channel of an MLS.
A code indicating the class of a radio marker.
A coded list of values that indicate the status of the painted surface marking elements.
A coded list of values indicating styles of painted lines.
List of military activities that have a national specificity.
A code indicating in terms of civil or military, the type of operations.
A code distinguishing between military and civil status.
A code indicating the type of flying on a military training route.
Code indicating final approach path type for establishing valid set of minima on a procedure.
A code classifying altitudes for approach procedure minima.
A code classifying heights for approach procedure minima.
Types of missed approach.
The type of Mode S.
A code indicating the class of an NDB.
A coded list of values indicating the intended usage of a navaid (en-route or airport)
Types of Navaid Services.
Indicates the type of restricted area that aircraft should avoid
A code indicating the type of navigation area.
A code indicating the navigation capability of the aircraft and associated flight crew qualifications.
A code describing the type of nitrogen supplies for aviation usage.
Type of aircraft noise certification as defined by the ICAO Annex 16 V1
A code describing the reasons for a non standard coordination.
A code indicating the type of the North reference used.
A list of values that indicate the goal with which a free text Note is provided.
A code describing the obscuration types.
A code indicating the type of obstacle coverage area, according to ICAO Annex 15.
A code indicating the type of surface assessment. Used for indicating assessment surfaces used in design and evaluation activities such as approach procedure design.
Specifies zones within obstruction identification surfaces (OIS).
The status of the oceanic clearance.
The reasons for an oceanic re-clearance.
A code indicating the category of oil available at an aerodrome/heliport.
A coded identifier indicating an operation executed by an aircraft in relation with an aerodrome.
A coded list of values that indicates a type of activity on an aerodrome manoeuvring area element.
The values indicating the type of association between two organisations.
A code indicating the type of an Organisation/Authority.
A code describing the type of oxygen supplies for aviation usage.
Type of Precision Approach Radar equipment.
A code indicating the method used in the evaluation of a PCN number.
A code indicating the pavement behaviour (rigid or flexible) used for the ACN determination.
A code indicating the sub-grade strength category related to a PCN number.
A code indicating the maximum allowable tyre pressure category related to a PCN number.
A list of particular days.
A list of particular matter types.
A code indicating a type of service provided to passengers at the airport.
A list to indicate the standard with which the pilot controlled lighting service complies.
A code describing the usage of a point within ATM context.
A code indicating a position in the ILS system.
A code describing the precipitation types.
A code indicating the availability of a procedure for use.
Code indicating the standard used to encode the approach procedure.
Indicates the distance and altitude type associated with an approach procedure.
A code indicating a phase of a SID, STAR or IAP.
A code indicating the location of the Protect Area lighting.
A code indicating which Area Navigation requirements can be met by the aircraft while operating in the context of a particular airspace when supported by the appropriate navigation infrastructure.
A code indicating which Required Navigation Performance requirements can be met by the aircraft while operating in the context of a particular airspace when supported by the appropriate navigation infrastructure.
A code indicating the position where the RVR reading is reported.
A code indicating, when instrumented systems are used for the assessment of RVR, the tendency (upward or downward) of the variations in RVR during the 10-minute period immediately preceding the observation.
A list of service types for Radar Systems.
A coded indicator for the type of information transmitted by a navaid or other radio emission source.
A coded list of values indicating the reason for abandoning the use of an airspace by a planned military mission.
The reason for aborting take-off.
The reasons for which a departure suspension may exist.
The reason for special handling of a flight by ATS.
The types of reference location.
A list describing the valid Point Reference makeups for use by navigation receivers.
Type of Reflector associated to the PAR.
A code indicating the location category for an ATFM regulation.
A list of values indicating a direction with regard to a reference point.
A list of values indicating a relative position, in relation with a reference point.
A code describing the release indications.
The kind of responsibilities that can be available in an ATSU.
A code indicating the type of a road.
The kind of roles that can be available in an ATSU.
A code indicating the route segment availability.
A one character designator for the route.
A prefix for route designators.
A suffix for the route designator.
A code indicating the type of a route from a navigation point of view.
A code indicating if a route is international or domestic.
A code indicating the type of segment path.
A code indicating the route classification.
An open list of values indicating a general heading by which a rule or procedure is usually identified in the Aeronautical Information Publications (AIP) or similar/related documents.
An open coded list of values indicating the purpose of a rule or procedure.
A runway direction may be operational for arrivals only, for departures only, for both (mixed mode) or it may be closed.
A code indicating the type of runway element.
Type of runway marking related to landing categories such as precision, non-precision and basic.
A code indicating the type of protection area for a runway
A code indicating the position of an item on a surface of a runway.
A code that makes a distinction between runways for airplanes and FATO for helicopters.
Categories of SSR code.
A code describing the different modes of surveillance.
A code indicating the type of altitude used, MSA or ESA.
The types of the safety mitigation advice.
A code describing the state of the sea based on the height of waves, as specified in WMO Publication No. 306, Manual on Codes, Volume I,1, Part A - Alphanumerix Codes, Code Table 3700.
A code indicating the type of flight path and its associated type of termination.
A code indicating the end point of a terminal procedure segment leg.
The reason for issuing the advice.
The types of separation advice.
The types of indicator of separation not in lead.
A list of codes used to designate flight planning and air traffic flow management services.
Information concerning the configuration of a Service.
A list of codes used to designate information provision services.
A list of codes used to designate services in relation with search and rescue.
A coded value indicating the signal performance level in space corresponding to the precision of an ILS or MLS system according to ICAO Annex 10, Volume I, Chapter 3.
A code indicating a specific type of significant point, in direct relation with the designator allocated to that point.
Qualifiers used in association with a reported significant weather phenomenon.
Indication whether a slot is pre-allocated to a flight (typically two hours before the Estimated Off-Block Time) or allocated (after these two hours).
Indication whether a proposal is pending to be accepted or rejected, or if it has been rejected.
ATM specific codes used to express height in non-numeric terms.
A code indicating the type of service provided by a station in a special navigation system chain, depending on the type of the system.
A code indicating a type of special navigation system.
Type of service available at a stand, such as visual or instrumental docking guidance system.
Type of power used when the radar is required to operate on standby.
A coded list of values that indicates the availability of an aerodrome facility for specific flight operations.
A coded list of values indicating the activation status of an Airspace.
A code indicating the status of the construction of a Vertical Structure.
The operational status of a Navaid or NavaidEquipment
Code indicating operational status.
A coded list of values that indicate the operational capability of a service.
The method used for distributing supply at an apron.
A code indicating the composition of a surface.
A code indicating the condition of a surface, such as a runway, taxiway, the marking of a threshold, etc..
A code indicating the preparation technique for a surface area.
Vehicle fleet identification
A code indicating the SSR and ADS capability of the aircraft.
The type of equipment carried on board the aircraft that can be used by the crew and passengers to assist survival in harsh environments in case of emergency.
A code indicating the types of Terminal Arrival Altitude.
A code indicating the channel of a TACAN.
A code indicating the position of an item on the surface of a Touch Down and Lift-off Area.
A code describing the status of the tactical rerouting proposal.
A code indicating how the tactical rerouting measure is to be applied.
A code indicating the type of tactical rerouting constraint.
Describes whether a flight was rerouted, and if that is the case, why.
If a flight was rerouted, describes the current rerouting state.
A code describing the status of the target take-off time.
A code indicating the capability of the aircraft to report target trajectory change.
A code indicating the type of taxi route mode.
Specifies whether the considered Taxi Route was the planned one or a deviation of it.
A code list of values indicating a component of the taxiway surface.
A code indicating the position of an item on the surface of a taxiway.
A code indicating a type of taxiway.
Codelist containing the Telecom Networks that can be used to address an organisation.
A code indicating the capability of the aircraft to warn or alert about the proximity of the ground.
A code indicating which event in a list of events in time should be given precedence over the others. E.g. the earliest or the latest.
A code indicating an event occurrence during any day.
A coded indication of a time reference system - UTC or local.
A code indicating the 4D trajectory clearance states.
The type of Trajectory Element.
The state of acceptance of the trajectory point by the FDMP.
A code indicating the type of trajectory point.
The type of Trajectory.
A code indicating a transponder mode.
A code describing the types of turbulence.
The type of taxi route.
A list of coded values that indicate the kind of dependency between a Unit and a related Unit.
A unit providing particular ATS services.
Units of measure for acceleration.
Units of measure for an area.
Units of measure for a rate of progress or change of a certain material as it builds up on solid objects.
Units of measure for Eddy Dissipation Rate.
Units of measure for electric current.
Units of measure for energy flux.
Units of measure for a force.
Units of measure for frequency.
Units of measure for length.
Units of measure for luminance.
Units of measure for light intensity.
Units of measure for mass concentration.
Units of measure for mass density.
Units of measure for mass.
Units of measure for a particle content.
Units of measure for particle flux.
Units of measure for the plane angle.
Units of measure for power.
Units of measure for pressure.
Units of measure for the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
Units of measure for the solid angle.
Units of measure for temperature.
Units of measure an interval of time.
Units of measure for speed.
Units of measure for concentration.
Units of measure for a volume measurement.
Units of measure for a weight.
Letters of the Latin alphabet.
A code indicating whether a limitation is of type permission, interdiction or exclusive usage.
A code indicating a type of visual approach slope indicator system.
A code indicating the type of path to the next point.
Interpretation given to a validity period.
A code describing the proportion of a runway surface that is contaminated by a contaminant, as a percentage of the total runway area.
A code indicating how a value needs to be interpreted when used as a filter or condition. For example: above the value or below the value.
List of vertical datums.
A code indicating the reference for a vertical distance.
A code indicating the type and pattern of markings on a vertical structure.
A coded list of values indicating the type(s) of material that could compose the load-bearing structure and/or exterior facing of a vertical construction.
A code indicating the type of vertical structure.
A coded list of values that indicate types of systems used at aircraft stands in order to help the pilot align and position the aircraft.
A code indicating the weather intensity.
A code describing the types of weather phenomenon.
When it is not possible to forecast a prevailing surface wind direction due to its expected variability, for example, during light wind conditions (less than 3 kt) or thunderstorms, the forecast wind direction should be indicated as variable using "VRB". When the wind is forecast to be less than 1 kt the forecast wind speed should be indicated as calm. When a wind speed of 20oKm/h (100kt) or more is forecast, it should be indicated as 200Km/h (or 100kt) [ICAO ANNEX 3, recommendation 6.2.12]
A code indicating the type of work performed in the work area.
A qualification of the impact of an airspace reservation over a route segment.
Information required to enable contact with the responsible person and/or organisation.
An estimated or observed outline of a particular weather situation.
An ATM imposed constraint over a point.
In the atmosphere, convection is the dominant vertical transport process in convective boundary layers, which are common over tropical oceans and, during sunny days, over continents. Moist convection in the atmosphere is characterized by deep, saturated updrafts and downdrafts, and unsaturated downdrafts driven by the evaporation and melting of precipitation. This form of convection is made visible by cumulus clouds and cumulonimbus clouds in the case of precipitation convection.
A volume of convective air.
A dialogue procedure between ATC Units successively in control of a flight, comprising
Indication whether the next authority has been notified or not.
Indicator of whether or not the receiving unit is requested to assign an SSR code to the flight.
Indicator of whether or not the coordination process is in agreement with pre-defined criteria (agreed coordination points, flight levels on these points, ADEP, ADES, time or distance limits after which coordination is considered non standard etc.).
A constraint used during the coordination dialog through a WIFO.
The trajectory data coordinated for handover between adjacent ATC sectors or units. Coordination conditions (point, level, entry time ...) are of two types : standard and non-standard conditions. Non-standard conditions require an explicit acceptance by controllers, whereas standard ones are automatically accepted.
Indicator of whether or not the coordination conditions are in agreement with pre-defined criteria (agreed coordination points, flight levels on these points, ADEP, ADES, time or distance limits after which coordination is considered non standard etc.).
A person assigned by an operator to duty on an aircraft during a flight duty period.
Ultra High Frequency (UHF) ground equipment that is used in conjunction with airborne equipment to determine distance between the airborne and ground equipment.
A combination of a date and a time type which allows the planning status to be recorded.
De-icing operation on an aircraft that may consist of removal of snow, ice or frost from the aircraft (de-icing), and/or also application of chemicals that remain on a surface and continue to delay the reformation of ice up (anti-icing).
An area comprising an inner area for the parking of an aeroplane to receive de-icing / anti-icing treatment and an outer area for the manoeuvring of two or more mobile de-icing / anti-icing equipment.
A symbol or group of symbols displayed on the surface of a deicing area
A group of deicing areas.
The apportionment of an AMAN or EMAN delay.
The change in noise and gaseous emissions measured at a given waypoint.
Authorization for an aircraft to take-off under conditions specified by an air traffic control unit.
A portion of a departure procedure as defined by two consecutive significant points.
A condition which is established for a departure leg.
The set of flight operations following procedures associated with the departure aerodrome.
An ordered set of departures.
The action through which a flight departure is suspended either by the AO (e.g. when the aircraft meets a severe technical problem) or by the APOP for any reason.
A geographical location not marked by the site of a radio navigation aid, used in defining an ATS route, the flight path of an aircraft or for other navigation or ATS purposes.
A special permission for military transport aircraft of the participants to fly over each other country's territory and to land at and take-off from military and civilian airports (to the exception of the airports and/or areas specifically mentioned in a list of exempted airports and/or areas to be completed by each participant) whilst adhering to all national rules, international agreements, ICAO rules, restrictions described in the national military and civilian Aeronautical Information Publications, ATC regulations, NOTAMs or other special requirements.
A direct route that can be added to heterogeneous flight plan routes and can participate in route proposal triggering.
An electronic device used to determine the position of a radio source by means of directional antennas, which receives the strongest radio signal when it is pointing directly at the transmitter.
An indication whether the equipment uses the doppler effect for higher precision.
A distance reference from a significant point.
The area of variation of a vertical distance between upper and lower limits.
Describes the length or distance in the temporal dimension and allows the planning status to be recorded.
A generic term meaning, as the case may be, uncertainty phase, alert phase or distress phase.
Measure of the average amount of a specific pollutant or material discharged into the atmosphere by a specific process, fuel, equipment, or source.
A delay planned to occur while en-route.
A unit used or intended to be used for aircraft propulsion. It consists of at least those components and equipment necessary for functioning and control, but excludes the propeller/rotors (if applicable).
The engine regime (throttle position) of an aircraft.
A definition (type) of an data (ATM) item of interest that is implementation independent and it is subject to constraints.
A collection of entities.
A particular aircraft equipment capability.
Indication whether the aircraft equipment has this type of capability.
Adjustments to minima when equipment is not available.
Indication whether the specified altitude/height is adjusted for the case when the approach lighting is inoperative.
Adjustments that need to be applied in case equipment is inoperative.
Indication whether the approach lighting is inoperative.
Indication whether RVR reading equipment is available.
Indication whether landing system lights are available.
Facilities available at the airport for handicapped persons.
The additional information about the Precision Final Segment. Most attributes describe the LPV path point record required for WAAS procedures.
In the context of final arrival sequence, the advice for safety mitigation.
In the context of final arrival sequence, the advice to ensure additional spacing required between each arrival pair taking into account their respective landing stabilisation speed profile intentions or characteristics.
A segment leg designed in accordance with the rules for final segments.
Indication whether DME/DME RNP 0.3 is allowed.
The profile view of a final segment defined for an approach procedure.
An airport service that provides rescue and fire fighting capabilities for aircraft in emergency at and around the airport.
The operation of an aircraft which, in the case of a manned aircraft, takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked, or in the case of an unmanned aircraft, takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down.
Indicator that the flight is expected to be operating in accordance with regulations issued by the relevant State for aircraft operating as State aircraft, as per Article 3 of the Convention on International Civil Aviation (Doc 7300), and for aircraft operating in accordance with State regulations for non-standard flying activities, normally through the use of reserved airspace.
The aircraft operator may be unwilling to perform air-to-air separation.
The aircraft operator may be unwilling to perform circling approaches.
The operator may be unwilling or unable to accept a specific runway.
Indication whether the flight is airborne.
Indication whether a change in the management of the flight has been forced by a manual arbitration.
Preferring a ground delay over a reroute for pre-departure flights.
For an AFIL flight, indication whether the IFPL identifier is temporary assigned by FDP.
Any reroute less than 120 nm or less is acceptable.
The capabilities of the flight comprising of the:
Circumstance related to the elementary condition (such as departing from an aerodrome), which is used to further refine the selection of flights being affected by the restriction.
A code indicating if the condition element is a reference location for the flight restriction, i.e. if the time schedule associated with the restriction must be considered as applicable for that flight condition element.
A combination of conditions involving:
An operand in a flight condition combination.
Configuration of aircraft in operation.
Indication that the “IDENT”-switch is active.
Position Offset Applied
Position Offset Applied = 0 Position transmitted is not ADS-B position reference point = 1 Position transmitted is the ADS-B position reference point
Indication whether the aircraft is receiving ATC Services.
Single Antenna
Single Antenna = 0 Antenna Diversity = 1 Single Antenna only
Indication whether specific BDS-registers are used, without additional specifications.
Flag indicating if TCAS Resolution Advisory is active
Flag indicating if TCAS Resolution Advisory is active =0 TCAS II or ACAS RA not active =1 TCAS RA active
Equipment and procedures for which the air crew is qualified.
Identifier of one or several consecutive IATA flight leg(s) operated by an airline.
The range of airspeeds, altitudes and normal load factors at which the aircraft can (safely) operate.
Impact of an ATFM measure on a flight.
Indication whether the ATFM measure has resulted in new calculated times for the concerned flight, such as CTOT and CTO.
Indication whether the flight has been "selected" for being acted upon in case of the ATFM measure is for cherry picking.
Indication whether the flight is impacted by the ATFM measure.
A change of Flight Level during the execution of the Flight.
The climbing and descending capabilities of the aircraft specific to the flight, taking into account the performance of the airframe that is used to operate the flight as well as any other parameters that may influence it such as engine settings and status, cost factor applied by the operator etc. The Flight Performance Data may be provided either as climb and descent performance profiles or as the total weight of aircraft as part of the 4D trajectory.
A period-in-time occurrence during a Flight.
Environmental related information for a specific phase of a flight. Different interpretations of phase exists. From the environmental point of view, phases are defined to include pre-flight and post-flight parts of a flight. This is needed to capture fuel burn, gaseous emissions and noise from the auxiliary power unit while aircraft is at stand.
A rule meant to regulate the use of the route network, by identifying a set of flights which fulfil a combination of elementary flow conditions and either forbidding them on a particular routing or obliging them to follow one routing out of a set of mandatory alternatives.
A single level or a level band associated with a flight restriction, either condition or routing element.
A sequence of routing elements (points, route portions or airspace) that must/must not appear in the specified order in the flight plan of an aircraft fulfilling the conditions of the related Flight Restriction.
Indication that a minimum lead time is required for contacting the relevant authority in order to get permission for using the routing.
An airspace, route or point that is concerned by a specified flight restriction.
A change of Flight Rules during the execution of the Flight.
A change of flight type during the execution of the Flight.
Floating facility which can serve as a mooring place for vessels or as a floating dry dock.
A pattern of traffic catching flights by origin, destination and crossings.
A location being either an aerodrome, a set of aerodromes, an airspace or a significant point.
A set of airframes that belong to one Unit and are of the same type.
Derived from GM_Point and extended to include properties for describing a three dimensional point with a time.
The type(s) of fuel available for aircraft and helicopters.
Access to an airport terminal on the passenger side.
Indication that the gate can be used for transit.
A physical or political border.
An entity which has a geospatial character.
An entity which is both geospatial in character and has temporal aspects.
Services necessary for an aircraft's arrival at, and departure from, an airport, other than air traffic services.
One or more light sources located on the ground that provide visual assistance for air and ground navigation.
The availability of a back-up lighting system to be used in case of failure of the main lighting system.
Information about the operational status of a ground light.
An ATC service provided for the purpose of: (a) preventing collisions on the manoeuvring area between aircraft and between aircraft and obstacles or vehicles; and (b) expediting and maintaining an orderly flow of aircraft operating on the manoeuvring area.
A line used to guide aircraft on and between airport movement areas.
The lighting system for the centreline guidance line.
A symbol or group of symbols displayed as the guidance line.
A change of heading during the execution of the Flight.
A defined area within which aircraft performs an en-route or approach holding.
The geometry of surfaces that define altitude levels and the structure of an area used to evaluate obstacles for determining holding patterns.
Indication that the evaluation is for turbulent air.
A predetermined manoeuvre which keeps an aircraft within a specified airspace while awaiting further clearance.
An indication that the holding pattern is non-standard.
The usage of the holding procedure on a segment.
An aggregation of horizontal visibility conditions typically reported together at an aerodrome, including the prevailing visibility and minimum visibility.
Indication that the prevailing visibility is of at least 10000 meters.
Indication whether the horizontalVisibility is given for a single direction or not.
A composed key whose fields together define a unique IATA flight leg.
The unique 24-bits address of the aircraft allocated by the registering authority of the State within which the aircraft is registered.
A component of an ILS consisting of a UHF transmitter radiating signals and providing a straight line descent path in the vertical plane containing the centre line of the runway served by the ILS, and thereby furnishing descent information down to the lowest authorized decision height or to the surface of a runway, depending on the Facility Performance Category of the ILS.
Formation of ice, rime, or hoarfrost on an aircraft in flight.
An identifier used to identify one instance of an entity within an identification scheme that is managed by a formal organisation.
The arrival of the aircraft at its parking position.
A service that consists in the provision of aeronautical, meteorological, traffic and related information to aircraft crew and other actors involved in flight operations, in flight or on the ground.
Indication whether the service is available via data-link.
Indication whether the information broadcast is recorded and played back rather than a live transmission.
Indication whether the service is provided as voice message.
A segment leg designed in accordance with the rules for initial segments.
A series of predetermined manoeuvres by reference to flight instruments with specified protection from obstacles from the initial approach fix, or where applicable, from the beginning of a defined arrival route to a point from which a landing can be completed and thereafter, if a landing is not completed, to a position at which holding or en-route obstacle clearance criteria apply.
Indication about SBAS reliability and expected level of service.
A combination of radio navigation services intended to facilitate aircraft in landing by providing lateral and vertical guidance including indications of distance from the optimum point of landing.
A segment leg designed in accordance with the rules for intermediate segments.
The index for emission of a specific gas from an engine for a specific LTO phase. Based on the ICAO Engine Exhaust Emissions Data Bank.
The index for fuel flow for an engine for a specific LTO phase. Based on the ICAO Engine Exhaust Emissions Data Bank.
Marking used for Land and Hold Short Operations (LAHSO).
Event in which an aircraft touches down.
The order in which two or more aircraft are planned to land taking into account ATM constraints.
Descriptors of the flight status in the arrival management process.
Indicator that the position of the flight in the landing sequence has been frozen
A restriction brought to the lateral component of the trajectory of an aircraft.
A constraint defined by an objective to set the cleared flight level for the flight.
The status and the intensity of an airborne controlled lighting system when activated by the pilot.
An elementary light source, part of a lighting system.
The operational status of the light(s).
A component of an ILS consisting of a VHF transmitter, radiating signals in the direction served by the ILS, to provide a straight line descent path in the vertical plane containing the centre line of the runway.
The minimum spacing between the estimated positions of the aircraft being separated. The spacing may be based on time or distance.
Coordination, in the context of Measure Collaborative Decision Making, for an ATFM measure or an action on a flight.
Indication whether the MCDMCoordination has local impact only and therefore involves only adjacent (upstream/downstream) FMPs instead of all FMPs along the flight path.
Indication whether the initiator of the coordination is the implementer.
The involvement of an organisation within an MCDM Coordination for an ATFM measure.
A component of an MLS consisting of an SHF transmitter and associated equipment, radiating signals in a volume of airspace served by the MLS, thereby furnishing azimuth indications to aircraft approaching the runway or back azimuth indications to aircraft departing from the runway or performing a missed approach procedure.
A component of an MLS consisting of an SHF transmitter, and associated equipment radiating signals within a volume of airspace served by the MLS, thereby furnishing elevation information as an angular value to aircraft approaching the runway.
That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons.
Information about the operational status of the manoeuvring area elements.
A rule governing the usage of the manoeuvring area element.
Predefined aircraft configuration specified and delivered by the manufacturer of the aircraft or aircraft equipment(s).
A radio navigation service identifying a particular location in space by means of a 75 megahertz (MHz) transmitter which transmits a directional signal to be received by aircraft flying overhead.
A symbol or group of symbols displayed on the surface of the movement area in order to convey aeronautical information.
Indicates the aerodrome protection area surface marking is in accordance with International Civil Aviation Organization (ICAO) standard as described in Annex 14.
A floating object moored to the bottom in a particular place, as an aid to navigation or for other specific purposes.
A symbol displayed on an aerodrome surface in order to convey aeronautical information.
The emanation of gas or particle pollutants due to the operation of aircraft.
A precision approach and landing guidance system operating in the microwave spectrum, which provides position information and various ground-to-air data.
The military authority designated by the State.
Action or movement performed by an aircraft or a group of aircraft used in military service which may pose a threat to civil aircraft and which should be coordinated with ATS authorities.
Vertical and horizontal visual minima for a procedure segment conditions such as aircraft category, navigation equipment usage, procedure type, altimeter, etc.
Indication that RVR equipment is mandatory for this operation.
A segment leg designed in accordance with the rules for missed approach segments.
Indication whether the missed approach point is after the threshold.
The procedure to be followed if the approach cannot be continued.
Operation carried out by an aircraft or a group of aircraft used in military service.
That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, consisting of the manoeuvring area and the apron(s).
Movement information associated with a phenomenon.
Indication whether a meteorological phenomenon is moving or not.
A low or medium radio navigation service transmitting signals whereby the pilot of a suitably equipped aircraft can determine bearings, 'home in' on, and/or track to or from the station.
The navigation use of a radio navigation aid as a component of the radio navigation service.
Indication that the radio navigation aid is used to specify the navigable location of the radio navigation service when the radio navigation service is used as a significant point.
The distances between various runway centreline points and a radio navigation aid.
Information about the radio navigation aid monitoring.
An indicator that the radio navigation aid is monitored.
Information about the operational status of the radio navigation aid.
An area specified by sectors with altitude or procedure descent gradient limitations for omnidirectional departures or Pilot navigation area.
Area that is restricted from use for a procedure.
Subdivision of a sector to allow for different altitudes or gradients.
Nitrogen supplies in aviation.
Area where aircraft cannot be seen by a control tower and therefore are restricted to move.
A standardized or formalized collection of an (CLDM) Entity's Property/(ies). Object does not exist without the (CLDM) Entity but can be part of the operational language or system-specific property.
An object with a repetitive time period, occurring cyclically.
A weather phenomenon which reduces the visibility due to hydrometeor or lithometeor in suspension in the air.
An area used for the purpose of collecting obstacle data, as necessary for air navigation systems or functions.
The geometry of surfaces used to define the altitude the length of a segment, holding pattern, etc., in function of the obstructions located in the area.
Provides the location relative to a given point.
The highest airspace, obstacle or terrain relative to a prescribed plane within a specified area.
A code indicating whether the controlling obstacle penetrates the assessment surfaces.
Indication whether the obstruction penetrates the 40:1 OCS, therefore requiring a climb gradient to 200 feet or less above the departure end of runway.
Indication whether it is a controlling obstruction for the associated obstacle assessment area.
A set of values (peak, sustain, overload duration, duration of counting) dedicated to monitor the instantaneous density of aircraft in a sector, as represented in occupancy counts.
The information associated with an oceanic clearance.
The restriction data received from the pilot by an Oceanic Control Center about some clearance previously given to the pilot.
The departure of the aircraft from its parking position.
Event at which all doors of an aircraft are closed and departure will be possible immediately after reception of the ATC clearance.
Linear displacement established parallel to a designated ATS route at a given distance and in a given direction from the centre line relative to the direction of flight.
The type(s) of lubricating oil available for aircraft at an aerodrome.
On-line or Network information that can be used to contact the individual or organisation, including eMail address and web site page.
Aircraft configuration established by an aircraft operator for its fleet.
A collection of people organized together into a community or other social, commercial or political structure. The group has some common purpose or reason for existence which goes beyond the set of people belonging to it, and can act as an agent.
A type of hierarchical or associative relationship between two organisations showing ownership, supervision or membership.
The event of flying over a significant point associated with the aerodrome of arrival.
The event of flying over a significant point.
Indicates whether the significant point has been actually overflown.
The type(s) of oxygen supplies available for aviation usage.
Grouping of non-overlapping aircraft parking positions: a single ParkingConfiguration defines a way to divide the stand's area into one or more non-overlapping parking positions.
The objective of delay absorption that the AMAN or EMAN sets to a given ATSU.
A mechanically operated, adjustable ramp to provide direct passenger access between aircraft and buildings.
The availability of passenger amenities and facilities at or in the vicinity of an aerodrome.
Information needed for assessment of the KPIs for fuel efficiency. This is information about number of movements and amount of fuel burn for the phase within a specific timeframe for a specific kind if airspace (LandingTake-Off, TerminalControlArea, En-Route). Derived from the number of movements and amount of fuel burn, the average fuel burn for each flight in the phase for the airspace kind is derived. The amount of fuel burn is derived from the fuel burn in related PhaseOfFlight.
An indication that radio control of lighting is available to provide airborne control of lights by keying the aircraft's microphone.
The pilot designated by the operator, or in the case of general aviation, the owner, as being in command and charged with the safe conduct of a flight.
The location of a significant point not marked by the site of a radio navigation aid defined using a combination of angles and distances based on the navaid system, radar system or special navigation system.
Location on the movement area surface used for Air Traffic Control clearances. Position marking could be a painted marking or a sign.
Usage of the feature instance for Low Visibility Operations
Physical address at which the organization or individual may be contacted.
An ordered set of planned startup approval events used in departure management.
Hydrometeor consisting of a fall of an ensemble of particles. The forms of precipitation are: rain, drizzle, snow, snow grains, snow pellets, diamond dust, hail and ice pellets.
Primary radar equipment used to determine the position of an aircraft during final approach, in terms of lateral and vertical deviations relative to a nominal approach path, and in range relative to touchdown.
A series of predetermined manoeuvres with specified protection from obstacles.
Indication whether the procedure has been flight checked.
Indication whether the procedure is an RNAV procedure.
The status of the procedure for flight planning/operations.
DME facilities that are used for a particular segment for DME/DME navigation.
Indication whether the DME is critical for navigation on a procedure segment.
Indication whether the critical DME passed the DME/DME evaluation criteria.
A group of consecutive segments that are part of a branch on an approach procedure, SID or STAR.
A particular equipment or procedure qualification.
Indication whether the air crew has this qualification.
The use of a radar equipment as a component of the radar service provided by a radar system.
A physical radar equipment.
Indication whether the radar equipment is digital.
Indication whether the radar equipment has dual frequency.
Indication whether the equipment is for military use only.
Indication whether the equipment is to be only used for certain type of aircraft that are capable of using it.
Indication whether the equipment is for special use procedures only.
Indication whether a Moving Target Indicator (MTI) is available for the component.
One or more radar equipments providing radar services.
Indication whether aircraft clearance above the highest terrain and obstacles in a general area is monitored.
A radio frequency band of sufficient width and associated identification data used for one- or two-way communication from or to a transmitter on the ground or in the air.
Indication whether the communication channel has been flight checked.
A code indicating whether a frequency treats "selective call".
Information about the operational status of the radio communication channel.
A limitation, such as coverage, usability, etc., of a radio navigation aid or service frequency.
Any electronic system which provides information to be used by the pilot or aircraft navigation systems for position determination or flight path guidance.
Indication whether the radio navigation aid has been flight checked.
Indication whether the radio navigation aid is mobile.
A service providing guidance information or position data for the efficient and safe operation of aircraft supported by one or more radio navigation aids.
Indication whether the radio navigation service has been flight checked.
A series of desired 4D trajectories, with tolerances supplied if necessary by the airspace user to define when the next ranked trajectory should be used.
A change of rate of climb or descend during the execution of the Flight.
A contingency procedure taken in case of unexpected fuel burns according to which the crew can decide, at a certain point of the flight route, whether they will normally follow the filed route or they will land at an alternative aerodrome by following an alternative route.
A code used in the Network Manager (NM) Air Traffic Flow and Capacity Management (ATFCM) systems to describe one or more aerodromes, an Air Traffic Control (ATC) waypoint or an entire ATC sector.
A reflector used with a precision approach radar.
The coordinated number of flights that can be accommodated in a certain time period.
The release of a flight from the agreed transfer conditions after initial co-ordination has taken place.
Indication whether the release has been accepted by the transferring system instance.
Times to insert aircraft in sequence and remove aircraft from sequence.
Ridges of deposited material to the left or right of the runway, relative to the runway direction with the lowest designation number.
An established surface route on the movement area meant for the exclusive use of vehicles.
An indicator that a road is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.
A specified route designed for channeling the flow of traffic as necessary for the provision of air traffic service (ATS) from the end of the take-off and initial climb phase to the commencement of the approach and landing phase.
The operational availability of a route.
Weather observations and / or forecasts related to routes.
DME facilities that are used for a particular route for DME/DME navigation.
Indication whether the DME is critical for navigation on the route portion.
Indication whether the critical DME passed satisfactory or unsatisfactory.
A change of reference ATS Route or procedure during the execution of the Flight, including lateral offset.
Indication whether a CDR change has been instructed to aircraft (voice or D/L).
A group of two or more consecutive segments of the same route, which have the usage and/or the same flight restrictions.
A route or portion of route usually flown without an intermediate stop.
Indication of a signal gap in the segment.
An instruction or regulation that needs to be considered by personnel involved in flight operations in relation with an aerodrome or an airspace.
A defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft.
An indicator that the surface is no longer in operational use, but is still physically present and visible, although usually in a degraded state.
Specially prepared surface placed adjacent to the end of a runway to eliminate the erosive effect of the high wind forces produced by airplanes at the beginning of their take-off rolls.
Weather observations and / or forecasts related to a runway. May be defined for single or multiple runways.
Configuration of runway directions available for use in a given airport operational mode.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on the runway surface.
An indication that there are cleared aprons available serving a runway.
An indication that there are cleared taxiways available serving that runway.
A conventional operational distance declared for a runway direction.
One of the two possible landing and/or take-off directions of a runway or Final Approach and Take-off Area (FATO).
Indicates if Take-off Hold Light system is installed at that end of the runway.
The lighting system provided for a landing and take-off direction, including the stopway lights.
A portion of a runway.
Guidance line painted on the runway exit.
A symbol or group of symbols displayed on the surface of the runway in order to convey aeronautical information.
The order in which two or more aircraft are planned to land on or take-off from a given runway in a given direction, taking into account ATM constraints. The Runway Mix Sequence consists of a Landing Sequence and a Take-off Sequence.
The intended use of a runway direction for flight operations in the context of a certain runway configuration.
The operational parameters constraining the use of the runway direction in the given active configuration.
An area situated in the vicinity of a runway or provided to protect aircraft during manoeuvring, take-off and landing operations.
The lighting for the runway protect area.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on a section of the runway surface.
Descriptors of the flight in the runway sequencing process
Indication that the flight is sequenced considering it as being in an emergency status.
A status code indicating that ATC handles the flight manually, overriding the AMAN recommendations.
A status code indicating that ATC handles the flight with priority, usually overriding the AMAN recommendations.
Indicator that the position of the flight in the runway use sequence has been frozen.
The range over which the pilot of an aircraft on the centre line of a runway can see the runway surface markings or the lights delineating the runway or identifying its centre line.
The number assigned to a particular multiple pulse reply signal transmitted by a transponder in Mode A or Mode C.
A set of Minimum Sector Altitudes which completely describe an area centred on a significant point, usually contained within a sector of 46km (25NM) radius.
Subdivision of the Minimum Sector Altitudes to allow for lower altitudes.
Large body of (salt-) water which can have a high meteorological impact on air-traffic taking place above it.
Weather observations or forecasts over a defined area of sea.
A defined area on water at an aerodrome prescribed for the landing and take-off of seaplanes.
Ramps specifically designed to transit seaplanes from land to water and vice versa.
The performance of distress monitoring, communication, coordination and search and rescue functions, initial medical assistance or medical evacuation, through the use of public and private resources, including cooperating aircraft, vessels and other craft and installations.
A surveillance radar system which uses transmitters/receivers (interrogators) and transponders.
Indication whether the SSR is autonomous.
Indication whether the SSR is monopulse radar.
The four dimensional description of an ATS unit airspace sector, or group of sectors, which may be operated on a permanent or temporary basis.
Information about the operational status of the sector configuration.
Sector configuration is active or not.
Design criteria used for the navigation area sector.
Indication whether the sector is clear for the direction of turn.
A part of an instrument or visual flight procedure defined by two consecutive significant points.
Indication whether a procedure turn is required at the end of the segment leg.
A generic piece of equipment which detects targets and generates target reports.
The minimum displacements between an aircraft and a hazard which maintain the risk of collision at an acceptable level of safety.
An approved set of rules, procedures and conditions of application associated with separation minima.
The provision of tangible goods, information, instructions or guidance.
A code indicating whether the service is compliant with the ICAO standards and recommended practices specified for this type of service.
A service that is provided for the movements at an apron. For example: Marshal management service.
A service that is provided at a gate.
A service that is provided for the movements at a stand. For example: visual docking guidance system.
The operational status of the service.
Information about the operational identifier by which the provider of the service is called and the language used.
A specified geographical location used in defining an ATS route or the flight path of an aircraft and for other navigation and ATS purposes.
An indicator whether radar guidance is possible for reaching this point.
A radio navigation aid providing a final approach course similar to, but less precise than, that of the ILS localizer.
List of all slots corresponding to the regulation rate and period.
A calendar date that has a special meaning for a particular state or organisation.
A land based station of a special navigation system.
Information about the status of the special navigation station.
Wide area (worldwide) navigation systems based on a chain of land or maritime stations providing radio frequency signals which can be used by airborne equipment to determine at least, the mobile two-dimensional position.
SSR Code used in case of an emergency.
A change of speed during the execution of the Flight.
A restriction brought to the speed component of the trajectory of an aircraft.
The area of variation of a speed between upper and lower limits.
A symbol or group of symbols displayed on the surface of the Aircraft Stand.
A designated instrument flight rule (IFR) arrival route linking a significant point, normally on an ATS route, with a point from which a published instrument approach procedure can be commenced.
A designated instrument flight rule (IFR) departure route linking the aerodrome or a specified runway of the aerodrome with a specified significant point, normally on a designated ATS route, at which the en-route phase of a flight commences.
Indication whether the standard instrument departure is a contingency route.
A column of consecutive cruising levels within a standard level table.
Indication that reduced vertical separation minima is applied in the column.
The general rule by which standard level columns are used in a national airspace or within a region.
A table of consecutive cruising levels described under vertical separation criteria limited by an upper and lower level and used by General Air Traffic.
An indication whether the table is according to the ICAO SARPS.
The start up of the aircraft engines by the flight crew upon the ATC approval.
Approval from air traffic control to proceed with the Start-Up.
Descriptors of the flight in the pre-departure sequencing process
Indicator that the start up given time has been frozen.
Indicator that the position of the flight in the start up sequence has been frozen.
An internationally recognized geographic entity that provides air traffic service.
Indicates if the Country is one of the ECAC states.
Supplementary rate information expressed by a regulation for a specific supplementary period, expressed as number of slots per hour.
The characteristics of an aerodrome surface.
Presence or removal of hazardous conditions on aerodrome movement areas due to snow, ice, slush, water.
Indicates that the surface lights are obscured by surface contamination.
Indication that the surface contamination has extreme consequences.
Indicates that further total clearance of an aerodrome surface with contamination is expected.
Indication that the surface was cleared.
An operationally significant contaminant of homogeneous type such as snow, ice, slush, water, sand, etc., which is present on a large surface of the aerodrome area.
Information about the ground station where the radar scope is utilised.
Indication whether a Video Map is available for the component.
Radar equipment used to determine the position of an aircraft in range and azimuth.
Indication whether the antenna tilt is fixed.
Aircraft equipment that can be used by the crew and passengers to assist survival in harsh environments in case of emergency.
Whether the equipment is covered.
A navigation system developed by military and naval forces providing, as far as the navigating pilot is concerned and for suitably equipped aircraft, the same indication as a VOR/DME system.
An ATFM measure which requires an aircraft operator to file an alternate route/flight level in order to resolve ATC capacity problems and minimise delays.
A constraint on a tactical rerouting.
A tactical rerouting proposal by the ATFM.
Event in which an aircraft takes-off.
Aircraft configuration for a given flight. It is the configuration at "take-off".
Whether the aircraft has cargo onboard at take-off.
Whether the aircraft has passengers onboard at take-off.
An ordered set of planned Take-off events used in departure management.
Descriptors of the flight in the take-off sequencing process
Indicator that the position of the flight in the take-off sequence has been frozen
Indicator signifying that departure management has fixed the target take-off time.
Information relating to the taxi-in clearance of an aircraft.
The clearance provided by the tower ground controller to the aircraft for taxiing from the parking stand to the take-off runway.
A predefined path from a Runway to an aircraft Stand (and vice versa). A taxi route is a sequence of taxiways.
Indication whether the usage of the taxi route is allowed or prohibited, depending on runway configuration.
A defined path on a land aerodrome established for the taxiing of aircraft and intended to provide a link between one part of the aerodrome and another, including:
An indicator that a taxiway is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.
Configuration of taxiways available for use in a given airport operational mode.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on the taxiway surface.
A portion of a taxiway.
A designated position at which taxiing aircraft and vehicles must stop and hold position, unless otherwise authorized by the aerodrome control tower.
Lighting system for a taxiway hold position.
A symbol or group of symbols displayed on the surface of a Taxiway indicating the location of the Taxiway Holding Position.
Indicates if Runway Entry Light system is installed at holding position
A marking painted at a position at which taxiing aircraft and vehicles are expected to stop and hold until further cleared to proceed, when so instructed by the aerodrome control tower.
The lighting system provided for a taxiway at an aerodrome.
A symbol or group of symbols displayed on the surface of the taxiway.
Telephone numbers at which the organisation or individual may be contacted.
An entity which has a lifecycle, including a start of life, an end of life and various states along its life.
An installation on an aerodrome with facilities for loading and unloading aircraft and processing traffic (passengers, baggage, cargo and mail).
The lowest altitude that will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an arc of a circle defined by a 46 km (25 NM) radius centred on the initial approach fix (IAF), or where there is no IAF on the intermediate approach fix (IF), delimited by straight lines joining the extremity of the arc to the IF. The combined TAAs associated with an approach procedure shall account for an area of 360 degrees around the IF.
Subdivision of the TAA to allow for lower altitudes. The lowest altitude will provide a minimum clearance of 300m (1000ft) above all objects located in the sector.
Indication whether a course reversal is required.
Derived from GM_Curve and extended to include properties that represent the vertical position (elevation, datum, accuracy).
Derived from GM_Point and extended to include properties for describing a point with elevation and vertical extent.
Derived from GM_Surface and extended to include properties that represent the vertical position (elevation, datum, accuracy).
A restriction brought to the time component of the trajectory of an aircraft.
The area of variation of a time between earlier and later limits.
Time to entry boundary
Time to point boundary
The definition of a single time interval, that occurs repeatedly as part of a schedule.
Indicates that the startTime and endTime values of the timesheet have to be decreased by one hour when Daylight Saving is in force (summer time).
An indicator that the time block indicated by the timesheet is excluded (subtracted) from the total time interval(s) defined by one or more additional timesheet(s).
A load bearing area on which a helicopter may touch down or lift off.
An indicator that the touch down and lift-off area is no longer in operational use, but it is still physically present and visible, although usually in a degraded state.
The presence or removal of hazardous conditions due to snow, ice, slush, water, etc. on the Touch Down and Lift-Off (TLOF) surface.
The lighting system provided for a touch down and lift-off surface at an aerodrome.
A symbol or group of symbols displayed on the surface of the touch down and lift-off area at an aerodrome.
An obstacle-free area situated in the vicinity of a touchdown and lift-off area, provided to protect helicopters during manoeuvring, take-off and / or landing operations.
A change of track direction during the execution of the Flight.
The number of aircraft on a location during a time period.
A service that provides control and separation services, to aircraft in the air and on the ground.
Indication whether Controller-Pilot Data-Link Communication (CPDLC) is available in support of the service.
Indication whether the service is provided with radar assistance.
A set of conditions used to identify the flights over an airspace, point, aerodrome or set of aerodromes so that they can be monitored or regulated within the tactical/pre-tactical Air Traffic Flow and Capacity Management (ATFCM) system.
Indicates whether the Traffic Volume shall be monitored (i.e. when the sector is active in a sector configuration).
Information about the operational status of the traffic volume.
The role a flow fulfils within a traffic volume.
A set of Traffic volumes relating to a single Flow Management Position (FMP).
The description of movement of an aircraft both in the air and on the ground including position, time, and at least via calculation, speed and acceleration.
Any restriction brought to the trajectory of an aircraft, being either a tactical constraint such as air traffic controller instruction, or a strategic constraint derived from the operations of the network.
A group of two or more consecutive trajectory segments of the same trajectory.
A four dimensional point used in defining the flight path of an aircraft.
A line connecting consecutive trajectory points.
Data exchanged during the transfer phase.
Cyclone of tropical origin of small diameter (some hundreds of kilometres) with minimum surface pressure in some cases less than 900 hPa, very violent winds and torrential rain; sometimes accompanied by thunderstorms. It usually contains a central region, known as the "eye" of the storm, with a diameter of the order of some tens of kilometres, and with light winds and more or less lightly clouded sky.
The boundary between the troposphere and the stratosphere, where an abrupt change in lapse rate usually occurs.
Atmospheric flow regime characterized by chaotic and stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and time.
Derived from GM_Curve and extended to include Horizontal Accuracy properties
Derived from GM_Point and extended to include Horizontal Accuracy properties
Derived from GM_Surface and extended to include Horizontal Accuracy properties
A generic term referring to all types of entities providing all types of ATM related services.
Indicates whether the Unit is an AMC, a joint civil/military unit responsible for the day-to-day management and temporary allocation of national or sub-regional airspace under the jurisdiction of one or more ECAC state(s).
An indicator that the Unit is setup according to the International Civil Aviation Organisation (ICAO) Standards and Recommended Practices (SARPS).
Indication whether CPDLC facility is enabled.
Indication whether the unit is IOP-enabled.
Status and scheduling information about a unit.
The operational or functional relationship between two related units.
A specific holding procedure requested at an en-route fix on airway or route radials, bearings, or courses.
Indication whether the unplanned holding is completely contained within controlled airspace.
A rule governing the usage of an aerodrome or one of its surfaces.
A short-range, very-high-frequency omnidirectional beacon which provides an indication in the aircraft of the bearing of the beacon, or left-right track indication.
The vertical distance of a level, a point or an object considered as a point, measured from mean sea level (MSL).
An altitude contained within given limits.
The value of a concentration, which represent the abundance of a constituent divided by the total volume of a mixture.
The separation between two points.
The frequency value of a navigation system.
A hexadecimal value.
The luminous intensity of a light source. It is a measure of the wavelength-weighted power emitted by a light source in a particular direction.
A mass value.
The value of a pressure.
The value of a rate of turn.
The measure of motion in terms of speed in a particular direction. It is usually calculated using the simple formula, the change in position during a given time interval.
A speed contained within given limits.
The value of a temperature.
Velocity is the instantaneous rate of change of position with time. It is usually calculated using the simple formula, the change in position during a given time interval.
The separation between two points in the vertical plane.
The weight value.
Any means of carriage, conveyance, or transport.
A restriction brought to the vertical component of the trajectory of an aircraft.
All fixed and mobile objects, or parts thereof that extend above the surface of the Earth.
An indication that the vertical structure consists of a number of closely situated similar objects.
Indication that the vertical surface is lighted.
Indication whether the lighting complies with the ICAO standard as described in Annex 14.
Indication whether vertical structure markings comply with the International Civil Aviation Organisation (ICAO) standard, as described in Annex 14.
Indication that the flashing light elements that compose the lighting of the vertical structure (could be a group) are synchronised (flash in unison).
A part of the vertical structure that can be represented as point, line or polygon with vertical extent.
An indicator that the vertical structure part is easily broken.
Indication whether the vertical structure part is expected to move around its nominal location.
A visual guidance system that provides 'below/above glidepath' information to an aircraft executing an approach to a specific runway direction.
An indicator of whether or not a runway's visual glide slope indicator system is capable of being transported or conveyed.
Volcanic unrest or eruption.
Indication wether a volcano is erupting or not.
Ash contaminated atmospheric volume.
A geological formation in form of an Earth crust opening/rupture, which allows hot magma, volcanic ash and gases from below the surface, escape into the atmosphere.
A stretch of water on the surface of the Earth.
Weather observations or forecast for an area of interest.
Indication that no specified en-route weather phenomena which may affect the safety of aircraft operations is occurring or expected to occur.
A meteorological event.
A set of real or what-if flights.
A copy of the real flight used to negotiate potential changes to the flight data without affecting the corresponding data for the actual flight.
Air motion relative to the Earth's surface. Unless otherwise specified, only the horizontal component is considered.
Indication that the wind is forecast to be less than 0.5 m/s (1 kt).
Indication that the direction of the wind changes frequently. According to Annex 3 the wind is reported as variable (VRB) in local routine or special reports, in METAR and SPECI, when one of the following situations occur:
Indication that the direction of the wind changes frequently. According to Annex 3 the wind is reported as variable (VRB) in local routine or special reports, in METAR and SPECI, when one of the following situations occur: - when the total variation is 60 or more and less than 180 and the wind speed is less than 1.5 m/s (3 kt), the wind direction shall be reported as variable with no mean wind direction; or - when the total variation is 180 or more, the wind direction shall be reported as variable with no mean wind direction.
Vertically bounded area wind phenomenon, characterized by several attributes of type WindDirection, WindSpeed, a position and a height.
Local variation of the wind vector or any of its components in a given direction.
A part of an aerodrome in which maintenance or construction works are in progress.
Aerodrome work area activity information.
An indication that an aerodrome work area is active.