Air traffic control

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

present position symbol (PPS)

Aviation; Air traffic control

The display of a target after processing by a radar data processing system.

structured airspace

Aviation; Air traffic control

Certain portions of domestic airspace that will be structured for one-way traffic during times of peak traffic. Flight levels (FL) that are inappropriate for the direction of flight may be assigned ...

selective calling system (SELCAL)

Aviation; Air traffic control

A system that provides an automatic and selective method of calling any aircraft. Voice calling is replaced by the transmission of code tones to the aircraft over the international radiotelephony ...

separation

Aviation; Air traffic control

The spacing between aircraft, altitudes, or tracks.

traffic alert and collision avoidance system (TCAS)

Aviation; Air traffic control

A type of airborne collision avoidance system (ACAS) based on a family of airborne equipment that functions independently of the ground-based ATC system to detect potential conflicting aircraft that ...

non-radar separation

Aviation; Air traffic control

The separation used when aircraft position information is derived from sources other than radar.

tactical air navigation aid (TACAN)

Aviation; Air traffic control

An ultrahigh frequency electronic rho-theta air NAVAID that provides suitably equipped aircraft with a continuous indication of bearing and distance to the TACAN station.