Airworthiness Directive · Amendment 39-15333 · Landing gear
Pilatus Aircraft Limited Model PC-12, PC-12/45, and PC-12/47 Airplanes
This AD applies to PC-12, PC-12/45, and PC-12/47 airplanes, serial numbers 101 through 749, certificated in any category; that have not incorporated the actions in their entirety of PILATUS AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, dated July 24, 2007; and with one or more of the following installed:
(1) Main landing gear (MLG) assemblies delivered before December 31, 2006, with the following part numbers (P/N): 532.10.12.037, 532.10.12.038, 532.10.12.041, 532.10.12.042, 532.10.12.043, 532.10.12.044, 532.10.12.047, 532.10.12.048, 532.10.12.049, 532.10.12.050, 532.10.12.051, or 532.10.12.052;
(2) Special bolts P/N 532.10.12.110, 532.10.12.205, 532.10.12.077, or 532.10.12.202 delivered before December 31, 2006; or
(3) Modification kit numbers 500.50.12.267, 500.50.12.286, or 500.50.12.299 delivered before December 31, 2006.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions:
(1) Within the next 100 hours time-in-service (TIS) after February 20, 2008 (the effective date of this AD) or within the next 3 months after February 20, 2008 (the effective date of this AD), whichever occurs first, inspect the special bolts that attach the MLG retraction actuators and the special bolts that attach the shock absorbers to the MLG assemblies to identify the serial numbers that start with the letters AT or have the supplier code AT following PILATUS AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, Rev. No. 1, dated November 22, 2007.
(2) If during the inspection required in paragraph (f)(1) of this AD any special bolts with the serial number starting with the letters AT or special bolts with the supplier code AT are found, before further flight, replace the specified bolts with new bolts with the new part numbers in all MLG assemblies following PILATUS AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, Rev. No. 1, dated November 22, 2007.
(3) As of February 20, 2008 (the effective date of this AD), do not install any of the special bolts that have serial numbers that start with the letters AT or have the supplier code AT on Models PC-12, PC-12/45, and PC-12/47 airplanes as indicated in PILATUS AIRCRAFT LTD. PC-12 Service Bulletin No: 32-020, Rev. No. 1, dated November 22, 2007. MLG assemblies, special bolts, and modifications kits, as referenced in paragraphs (c)(1), (c)(2), and (c)(3) of this AD, delivered from PILATUS AIRCRAFT LTD. on or after December 31, 2006, will not incorporate the unsafe condition.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
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.
