Airworthiness Directive · Amendment 39-15229 · Power plant-general
Pilatus Aircraft Ltd. Models PC-12, PC-12/45, and PC-12/47 Airplanes
This AD applies to Models PC-12, PC-12/45, and PC-12-47 airplanes, all serial numbers, that are:
(1) Equipped with oil pipe/hose assemblies part number (P/N) 577.11.12.104, 577.11.12.105, 946.37.74.305, 946.37.74.306, 946.37.74.307, 946.37.74.308, or 946.37.74.311; and
(2) certificated in any category.
We are adopting a new airworthiness directive (AD) for the products listed above that will supersede an existing AD. This AD results from mandatory continuing airworthiness information (MCAI) issued by the 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 10 hours time-in-service after November 5, 2007 (the effective date of this AD), do a configuration check and inspection of the pipe/hose assemblies for abrasive damage (chafing) and distortion following paragraph 3.B of Pilatus Aircraft Ltd. Pilatus PC12 Service Bulletin No: 71-007, dated August 21, 2007.
(2) If during the configuration check and inspection required by paragraph (f)(1) of this AD any abrasive damage (chafing) on oil pipe/hose assemblies is found, before further flight, replace the hose/pipe assemblies following paragraphs 3.B, 3.C, and 3.E of Pilatus Aircraft Ltd. Pilatus PC12 Service Bulletin No: 71-007, dated August 21, 2007.
(3) If during the configuration check and inspection required by paragraph (f)(1) of this AD no damage on oil pipe/hose assemblies is found, within 6 calendar months after November 5, 2007 (the effective date of this AD), replace the hose/pipe assemblies following paragraph 3.B, 3.C, and 3.E of Pilatus Aircraft Ltd. Pilatus PC12 Service Bulletin No: 71-007, dated August 21, 2007.
(4) After November 5, 2007, do not install any oil pipe/hose assembly with P/N 577.11.12.104, 577.11.12.105, 946.37.74.305, 946.37.74.306, 946.37.74.307, 946.37.74.308, or 946.37.74.311 on any Models PC-12, PC-12/45, or PC-12/47 airplanes.
(5) After November 5, 2007, do not install a spare engine on any Models PC-12, PC-12/45, or PC-12/47 airplanes, unless it has been verified that no oil pipe/hose assembly with P/N 577.11.12.104, 577.11.12.105, 946.37.74.305, 946.37.74.306, 946.37.74.307, 946.37.74.308, or 946.37.74.311 are installed on that engine.
Note: This AD differs from the MCAI and/or service information as follows: The MCAI allows for the temporary replacement (up to 6 months) of the hose/pipe assemblies with the same type that incorporate the potential unsafe condition (P/N 577.11.12.104, 577.11.12.105, 946.37.74.305, 946.37.74.306, 946.37.74.307, 946.37.74.308, or 946.37.74.311). Due to the urgency of this unsafe condition, the FAA is mandating replacement with the improved parts immediately if damage is found.
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.
