Aviation

Aviation

Dealing with vehicles or machines used in flight or propulsion through the air.

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Aviation > Airport

marker beacon

Aviation; Air traffic control

A transmitter in the aeronautical radionavigation service that radiates vertically a distinctive pattern to provide position information to aircraft.

flight information service (FIS)

Aviation; Air traffic control

A service consisting of the following: (a) the dissemination of aviation weather information and aeronautical information for departure, destination and alternate aerodromes ...

morning civil twilight

Aviation; Air traffic control

Relative to the standard meridians of the time zones, the period of time that begins at the time specified by the Institute for National Measurement Standards of the National ...

distress

Aviation; Air traffic control

Condition of being threatened by serious and/or imminent danger and of requiring immediate assistance. The spoken word for distress is MAYDAY, and it is pronounced three times.

flight information service en route (FISE)

Aviation; Air traffic control

The provision and receipt by a flight information centre (FIC) of information pertinent to the en route phase of flight.

en route clearance

Aviation; Air traffic control

A clearance covering the flight path of an aircraft after takeoff to the point at which an approach to land is expected to commence.

deviation

Aviation; Air traffic control

(1) A departure from a current clearance, such as an off-course manoeuvre, to avoid weather or turbulence. (2) The angular difference between magnetic and compass headings.