12 Airworthiness Directives: 10 airplane, 2 engine.
AD 59-12-01 · published 1959
Maryland Air Industries, Inc. Airplanes
AD 59-12-02 · published 1959
Lockheed Aircraft Corporation Airplanes
AD 59-12-03 · published 1959
Vickers-Armstrongs (Aircraft Limited) Airplanes
AD 59-12-08 · published 1959
de Havilland Aircraft Co., Ltd., The Airplanes
AD 59-08-03 · published Jun 9, 1959, effective May 1, 1959
Piper Aircraft Inc. Airplanes
AD 59-10-08 · published Jun 25, 1959, effective Jul 15, 1959
Piper Aircraft Inc. Airplanes
AD 59-12-09 · published Jun 30, 1959, effective Jun 30, 1959
Piper Aircraft Inc. Airplanes
AD 59-12-07 · published 1959
Wright Aeronautical Division, Curtiss-Wright Corporation Engines
