13 Airworthiness Directives: 10 airplane, 1 rotorcraft, 2 engine.
AD 74-17-04 · published Apr 7, 1977, effective Apr 11, 1977
FS 2002 Corp., FS 2003 Corp., Piper Aircraft Inc. Airplanes
AD 77-07-02 · published Apr 7, 1977, effective Apr 7, 1977
Dassault Aviation Airplanes
AD 77-07-04 · published Apr 11, 1977, effective Apr 11, 1977
True Flight Holdings LLC Airplanes
AD 77-07-06 · published Apr 11, 1977, effective Apr 11, 1977
Textron Aviation Inc. Airplanes
AD 66-30-04 · published Apr 13, 1977, effective Apr 13, 1977
Maryland Air Industries, Inc. Airplanes
AD 77-07-09 · published Apr 18, 1977, effective Apr 18, 1977
Dassault Aviation Airplanes
AD 77-07-10 · published Apr 18, 1977, effective Apr 18, 1977
B-N Group Ltd. Airplanes
AD 77-08-02 · published Apr 18, 1977, effective Nov 15, 1977
Piper Aircraft Inc. Airplanes
AD 77-08-03 · published Apr 19, 1977, effective Apr 19, 1977
True Flight Holdings LLC Airplanes
AD 77-08-05 · published Apr 28, 1977, effective Apr 28, 1977
Cessna Aircraft Company Airplanes
AD 77-07-01 · published Apr 4, 1977, effective Apr 4, 1977
Schweizer Aircraft Corporation Helicopters
AD 75-06-01 · published Apr 1, 1977, effective Apr 1, 1977
Pratt & Whitney Canada Corp., Pratt & Whitney Division Engines
AD 77-07-11 · published Apr 15, 1977, effective Apr 15, 1977
Pratt & Whitney Division Engines
