7 Airworthiness Directives: 1 airplane, 4 rotorcraft, 2 engine.
AD 73-17-03 · published Sep 13, 1973, effective Sep 13, 1973
de Havilland Aircraft Co., Ltd., The Airplanes
AD 71-18-04 · published Sep 3, 1973, effective Sep 3, 1973
Bell Helicopter Textron Canada Limited Helicopters
AD 73-19-08 · published Sep 15, 1973, effective Sep 15, 1973
Bell Helicopter Textron Canada Limited Helicopters
AD 73-19-09 · published Sep 17, 1973, effective Sep 17, 1973
Bell Helicopter Textron Canada Limited Helicopters
AD 73-15-02 · published Sep 14, 1973, effective Sep 14, 1973
Pratt & Whitney Division Engines
AD 73-19-07 · published Sep 14, 1973, effective Sep 14, 1973
Rolls-Royce Corporation Engines
