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.
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.
Ultra High Frequency (UHF) ground equipment that is used in conjunction with airborne equipment to determine distance between the airborne and ground equipment.
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 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.
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 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.
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.
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 precision approach and landing guidance system operating in the microwave spectrum, which provides position information and various ground-to-air data.
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.
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.
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 radio navigation aid providing a final approach course similar to, but less precise than, that of the ILS localizer.
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.
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.
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.