AD 2015-07-04 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

Makes named: pilatus. Models named: PC-7. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Pilatus Aircraft Ltd. Model PC-7 airplanes, all serial numbers, that: (1) have not incorporated the actions of any version of PILATUS PC-7 Service Bulletin No: 21-006, which allows for the installation of a different air conditioning compressor mounted at a different location and makes the unsafe condition nonexistent; and (2) are certificated in any category.

Unless already done, within the next 120 days after May 19, 2015 (the effective date of this AD), install a cover assembly on the attachment points of the compressor following the Accomplishment Instructions in PILATUS PC-7 Service Bulletin No: 21-012, dated November 4, 2014.

The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-4090; email: doug.rudolph@faa.gov. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, a federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.

This AD was prompted by mandatory continuing airworthiness information (MCAI) originated 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 the potential for a spring on the air conditioning compressor clutch plate to shear the oil cooler inlet-hose due to the close routing of these parts without a protective cover. We are issuing this AD to correct the unprotected routing of the oil cooler inlet-hose, which could lead to damage of the oil hose resulting in an engine oil spill into the engine bay.

None.