Airworthiness Directive · Amendment 39-15581 · Landing gear
Pilatus Aircraft Ltd. PC-6 Series Airplanes
This AD applies to Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 airplanes, all serial numbers, certificated in any category.
Note 1: These airplanes may also be identified as Fairchild Republic Company PC-6 airplanes, Fairchild Heli Porter PC-6 airplanes, or Fairchild-Hiller Corporation PC-6 airplanes.
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 after July 30, 2008 (the effective date of this AD) or within the next 12 months after July 30, 2008 (the effective date of this AD), whichever occurs first:
(i) Replace the screws and nuts that attach the locking plate to the locking lever of the tail-wheel locking mechanism with steels screws and nuts following Pilatus Aircraft Ltd. Pilatus PC-6 Service Bulletin, 32-001, dated August 8, 2006.
(ii) Install the placard on the tail-wheel mudguard following Pilatus Aircraft Ltd. Pilatus PC-6 Service Bulletin, 32-001, dated August 8, 2006.
(2) As of July 30, 2008 (the effective date of this AD) do not install on any of the affected airplanes locking lever assemblies part number (P/N) 6403.0094.00 or P/N 114.45.06.077 or tail landing gear assemblies P/N 6403.0067.xx or P/N 114.45.06.050 unless they have been modified following the Accomplishment Instructions of Pilatus Aircraft Ltd. Pilatus PC-6 Service Bulletin, 32-001, dated August 8, 2006.
Note 2: The letter “x” in P/N 6403.0067.xx stands for a numeral varying from 0 to 9.
Note 3: 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.
