HomeAD libraryBy monthMarch 1971ADs published in March 19712 Airworthiness Directives.February 1971April 1971AirplaneAD 71-02-03 · published Mar 9, 1971, effective Mar 9, 1971Kelowna Flightcraft R & D Ltd. AirplanesKelowna Flightcraft R & D Ltd. AirplanesAD 71-06-06 · published Mar 16, 1971, effective Mar 16, 1971Maule Aerospace Technology, Inc. AirplanesMaule Aerospace Technology, Inc. Airplanes