(*) A service provided for the purpose of: a. preventing collisions: (1) between aircraft; and (2) on the maneuvering area between aircraft and obstructions; and b. expediting and maintaining an orderly flow of air traffic.
AIR TRAFFIC CONTROL SERVICE
Meaning of AIR TRAFFIC CONTROL SERVICE in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012