Airworthiness Directive · Amendment 39-11319 · Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes
Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes
Superseded. A later AD replaced this one: AD 2001-25-10. Comply with the one in force.
Models PC-12 and PC-12/45 airplanes, manufacturer serial numbers (MSN) 101 through MSN 236; certificated in any category, that have one of the following flight control flap actuators installed: --Pilatus part number (P/N) 978.71.20.302--Actuator, Linear (951D100-5); --Pilatus P/N 978.71.20.303--Actuator, Linear (951D100-7); and --Pilatus P/N 978.71.20.304--Actuator, Linear (951D100-9).
This amendment adopts a new airworthiness directive (AD) that applies to certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC- 12/45 airplanes. This AD requires inspecting all flap actuator internal gear systems to assure that correct end-play and backlash measurements exist, and accomplishing any corrective adjustments as necessary. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to prevent premature wear of the internal gear system caused by excessive backlash in the flight control flap actuators, which could eventually result in loss of actuator output with possible reduced or loss of airplane control.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
