14 Airworthiness Directives: 7 airplane, 6 rotorcraft, 1 engine.
AD 80-11-05 R1 · published Dec 8, 1980, effective Dec 8, 1980
The Boeing Company Airplanes
AD 80-19-09 R1 · published Dec 11, 1980, effective Dec 11, 1980
Learjet Inc. Airplanes
AD 80-26-51 · published Dec 13, 1980, effective Dec 13, 1980
The Boeing Company Airplanes
AD 75-10-02 R2 · published Dec 16, 1980, effective Dec 16, 1980
Lockheed Martin Corporation Airplanes
AD 80-26-03 · published Dec 19, 1980, effective Dec 19, 1980
Viking Air Limited Airplanes
AD 80-26-05 · published Dec 19, 1980, effective Dec 19, 1980
Piper Aircraft, Inc., The New, Piper Aircraft, Inc. Airplanes
AD 80-22-54 · published Dec 24, 1980, effective Dec 24, 1980
Sabreliner Corporation Airplanes
AD 80-24-04 · published Dec 4, 1980, effective Dec 4, 1980
MD Helicopters, Inc. Helicopters
AD 80-25-01 · published Dec 4, 1980, effective Dec 4, 1980
MD Helicopters, Inc. Helicopters
AD 80-25-08 · published Dec 12, 1980, effective Dec 12, 1980
Columbia Helicopters, Inc. Helicopters
AD 80-21-53 · published Dec 18, 1980, effective Dec 18, 1980
Robinson Helicopter Company Helicopters
AD 76-08-01 R1 · published Dec 29, 1980, effective Dec 29, 1980
Sikorsky Aircraft Corporation Helicopters
AD 80-26-06 · published Dec 29, 1980, effective Dec 29, 1980
Robinson Helicopter Company Helicopters
AD 80-22-53 · published Dec 31, 1980, effective Dec 31, 1980
Honeywell International Inc. Engines
