6 Airworthiness Directives: 4 airplane, 2 engine.
AD 68-10-06 · published Jun 10, 1968, effective Jun 10, 1968
Pilatus Aircraft Limited Airplanes
AD 68-12-04 · published Jun 12, 1968, effective Jun 14, 1968
Piper Aircraft Inc. Airplanes
AD 68-12-05 · published Jun 14, 1968, effective Jun 14, 1968
Dynac Aerospace Corporation Airplanes
AD 68-13-01 · published Jun 22, 1968, effective Jun 25, 1968
Piper Aircraft Inc. Airplanes
AD 68-12-03 · published Jun 12, 1968, effective Jun 12, 1968
Pratt & Whitney Division Engines
AD 68-12-06 · published Jun 18, 1968, effective Jun 18, 1968
Rolls-Royce Corporation Engines