8 Airworthiness Directives: 2 airplane, 2 rotorcraft, 2 engine, 1 appliance, 1 glider.
AD 84-09-51 R1 · published Sep 11, 1984, effective Sep 11, 1984
Lockheed Martin Corporation Airplanes
AD 84-09-03 · published Sep 21, 1984, effective Sep 21, 1984
Thrush Aircraft, Inc. Airplanes
AD 84-12-51 · published Sep 11, 1984, effective Sep 11, 1984
Westland Helicopters Limited Helicopters
AD 84-19-08 · published Sep 20, 1984, effective Sep 20, 1984
Hiller Aviation, Siam Hiller Holdings, Inc. Helicopters
AD 84-19-03 R1 · published Sep 20, 1984, effective Sep 20, 1984
Lycoming Engines Engines
AD 84-18-07 · published Sep 21, 1984, effective Sep 21, 1984
Overland Aviation, Walter Kidde Appliances
AD 84-13-04 · published Sep 13, 1984, effective Sep 13, 1984
Alexander Schleicher GmbH & Co. Gliders
