12 Airworthiness Directives: 4 airplane, 5 rotorcraft, 3 engine.
AD 78-05-08 R3 · published Feb 9, 1981, effective Feb 9, 1981
The Boeing Company Airplanes
AD 80-25-05 · published Feb 12, 1981, effective Feb 12, 1981
Piper Aircraft Inc. Airplanes
AD 81-04-02 · published Feb 12, 1981, effective Feb 12, 1981
Gulfstream Aerospace Corporation Airplanes
AD 81-01-01 · published Feb 26, 1981, effective Feb 27, 1981
Piper Aircraft Inc. Airplanes
AD 81-04-03 · published Feb 2, 1981, effective Feb 2, 1981
Continental Copters, Inc., Isenberg, Wilbur M., McCreary, Gifton, Scotts-Bell 47 Inc, Teryjon Aviation, Inc. Helicopters
AD 81-04-01 · published Feb 9, 1981, effective Feb 9, 1981
Hiller Aviation, Siam Hiller Holdings, Inc. Helicopters
AD 81-04-10 · published Feb 26, 1981, effective Feb 26, 1981
Kawasaki Heavy Industries, Limited Helicopters
AD 80-10-04 R1 · published Feb 28, 1981, effective Feb 28, 1981
Continental Copters, Inc., Isenberg, Wilbur M., McCreary, Gifton, Scotts-Bell 47 Inc, Teryjon Aviation, Inc. Helicopters
AD 81-01-51 · published Feb 28, 1981, effective Feb 28, 1981
Airbus Helicopters Helicopters
AD 80-08-06 R1 · published Feb 2, 1981, effective Feb 2, 1981
General Electric Company Engines
AD 81-02-02 · published Feb 2, 1981, effective Feb 2, 1981
General Electric Company Engines
AD 81-03-05 · published Feb 11, 1981, effective Feb 11, 1981
Lycoming Engines Engines
