7 Airworthiness Directives: 5 airplane, 1 rotorcraft, 1 engine.
AD 66-20-02 · published Aug 13, 1966, effective Aug 13, 1966
de Havilland Aircraft Co., Ltd., The Airplanes
AD 66-20-03 · published Aug 13, 1966, effective Aug 13, 1966
de Havilland Aircraft Co., Ltd., The Airplanes
AD 66-19-02 · published Aug 14, 1966, effective Aug 14, 1966
Cessna Aircraft Company Airplanes
AD 66-20-05 · published Aug 18, 1966, effective Aug 27, 1966
Piper Aircraft Inc. Airplanes
AD 66-19-03 · published Aug 19, 1966, effective Aug 19, 1966
Martin-Marietta Corporation Airplanes
AD 66-19-04 · published Aug 14, 1966, effective Aug 14, 1966
Sikorsky Aircraft Corporation Helicopters
AD 66-20-04 · published Aug 27, 1966, effective Aug 27, 1966
Lycoming Engines Engines
