ground-controller

ground control

noun
an airport facility that supervises the movement of aircraft and ground vehicles on ramps and taxiways.

Origin:
1930–35

ground controller, noun
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World English Dictionary
ground control
 
n
1.  the personnel, radar, computers, etc, on the ground that monitor the progress of aircraft or spacecraft
2.  a system for feeding continuous radio messages to an aircraft pilot to enable him to make a blind landing

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