偵てい察さつ飛ひ行こうていさつひこうMeanings1nounsurveillance flight; reconnaissance flightMilitary or security context; refers to an aerial mission for gathering information.偵てい察さつ飛ひ行こうは夜よ明あけ前まえに行おこなわれた。The reconnaissance flight was carried out before dawn.
