20 Terms
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Air traffic control
An in-airport service that facilitates the safe and orderly movement of aircrafts within and between airports, achieved by interpreting data from radar and weather devices, and by maintaining contact with pilots.
Industry: Aviation
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Air traffic control
Composite route system
Aviation; Air traffic control
An organised oceanic route structure that incorporates reduced lateral spacing between routes and in which composite separation is authorized.
Co-ordinated universal time
Aviation; Air traffic control
The time system used in aviation operations and given to the nearest minute, except when the pilot requests a time check. Time cheques are given to the nearest 15 s. The day begins at 0000 and ends ...
Control tower (TWR)
Aviation; Air traffic control
A unit established to provide ATC service to aerodrome traffic.
Blind transmission
Aviation; Air traffic control
A transmission from one station to another in circumstances where two-way communication cannot be established but where it is believed that the called station is able to receive the transmission.
Clear air turbulence (CAT)
Aviation; Air traffic control
Turbulence encountered in air where no clouds are present. This expression is commonly applied to high-level turbulence associated with wind shear (WS). CAT is often encountered in the vicinity of ...
Crosswind
Aviation; Air traffic control
When referring to wind conditions, a wind not parallel to the runway or the path of an aircraft.
Control zone (CZ)
Aviation; Air traffic control
A controlled airspace of defined dimensions extending upwards from the surface of the earth up to and including 3000 ft AAE unless otherwise specified.
