identification friend or foe
In a civilian aircraft: a transponder that responds by sending a code identifying itself.
quality of being Greenlandic
plural of ballgame
The Bolshevik state of Ukraine (1919–91), a constituent republic of the Soviet Union (1922–91).
乗員は着陸許可を出す前に、その航空機の識別友敵装置(IFFトランスポンダ)を確認した。
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