27 Airworthiness Directives: 19 airplane, 3 rotorcraft, 3 engine, 1 propeller, 1 appliance.
AD 91-07-16 · published May 6, 1991, effective May 6, 1991
The Boeing Company Airplanes
AD 91-07-15 · published May 10, 1991, effective May 10, 1991
The Boeing Company Airplanes
AD 91-08-08 · published May 13, 1991, effective May 13, 1991
DaimlerChrysler Aerospace AG Airplanes
AD 90-15-15 R1 · published May 15, 1991, effective May 15, 1991
American Champion Aircraft Corp. Airplanes
AD 91-08-11 · published May 17, 1991, effective May 17, 1991
BAE Systems (Operations) Limited Airplanes
AD 91-08-12 · published May 17, 1991, effective May 17, 1991
The Boeing Company Airplanes
AD 91-10-06 · published May 22, 1991, effective May 22, 1991
DeHavilland Support Limited Airplanes
AD 91-09-02 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-03 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-04 · published May 28, 1991, effective May 28, 1991
ATR - GIE Avions de Transport R gional Airplanes
AD 91-09-05 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-06 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-07 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-08 · published May 28, 1991, effective May 28, 1991
Viking Air Limited Airplanes
AD 91-09-09 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-11 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-12 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 91-09-15 · published May 28, 1991, effective May 28, 1991
The Boeing Company Airplanes
AD 90-26-54 · published May 29, 1991, effective May 29, 1991
The Boeing Company Airplanes
AD 91-08-02 · published May 3, 1991, effective May 3, 1991
MD Helicopters, Inc. Helicopters
AD 91-08-03 · published May 3, 1991, effective May 3, 1991
Sikorsky Aircraft Corporation Helicopters
AD 91-08-05 · published May 7, 1991, effective May 7, 1991
Agusta S.p.A. Helicopters
AD 91-08-07 · published May 6, 1991, effective May 6, 1991
Lycoming Engines Engines
AD 91-10-04 · published May 21, 1991, effective May 21, 1991
Lycoming Engines Engines
AD 90-04-06 R1 · published May 28, 1991, effective May 28, 1991
Lycoming Engines, Textron Lycoming, AVCO Corporation Engines
AD T91-11-51 · published 1991
Hamilton Standard Division, Hamilton Sundstrand Propellers
AD 91-08-04 · published May 6, 1991, effective May 6, 1991
Aviatech Inc., Bombardier Inc. Appliances
