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airport traffic area
avia. 机场交通区
space 机场空中交通管制区
 English thesaurus
airport traffic area
avia., amer. Unless otherwise specifically designated in FAR 93, that airspace within a horizontal radius of 5 SM from the geographical center of any airport at which a control tower is operating, extending from the surface up to, but not including, an altitude of 3000 ft above the elevation of an airport

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