14 Airworthiness Directives: 8 airplane, 3 rotorcraft, 3 engine.
AD 77-02-01 · published Nov 1, 1977, effective Nov 1, 1977
The Boeing Company Airplanes
AD 77-22-02 · published Nov 2, 1977, effective Nov 2, 1977
Alexandria Aircraft, LLC Airplanes
AD 77-20-06 · published Nov 3, 1977, effective Nov 3, 1977
Pilatus Aircraft Limited Airplanes
AD 77-22-05 · published Nov 7, 1977, effective Nov 7, 1977
American Champion Aircraft Corp. Airplanes
AD 77-23-03 · published Nov 10, 1977, effective Nov 14, 1977
Piper Aircraft Inc. Airplanes
AD 77-21-09 · published Nov 25, 1977, effective Nov 25, 1977
Lockheed Martin Corporation Airplanes
AD 77-23-11 · published Nov 28, 1977, effective Nov 28, 1977
Cessna Aircraft Company Airplanes
AD 77-24-02 · published Nov 28, 1977, effective Nov 28, 1977
Short Brothers PLC Airplanes
AD 77-21-01 · published Nov 14, 1977, effective Nov 14, 1977
Scotts-Bell 47 Inc Helicopters
AD 77-21-07 · published Nov 14, 1977, effective Nov 14, 1977
Airbus Helicopters Deutschland GmbH Helicopters
AD 77-22-04 · published Nov 28, 1977, effective Nov 28, 1977
Airbus Helicopters Helicopters
AD 77-21-05 · published Nov 11, 1977, effective Nov 11, 1977
Rolls-Royce Deutschland Ltd & Co KG Engines
AD 76-20-03 · published Nov 16, 1977, effective Nov 16, 1977
Pratt & Whitney Division Engines
AD 76-21-04 · published Nov 30, 1977, effective Nov 30, 1977
General Electric Company Engines
