Airworthiness directives › 2015-14-10
AD 2015-14-10 Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes
Makes named: pilatus. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the following PILATUS AIRCRAFT LTD. model and serial number airplanes, certificated in any category. (1) Model PC-12/47, manufacturer serial numbers (MSNs) 684 through MSN 888; and (2) Model PC-12/47E, MSNs 545, and 1001 through 1520.
Compliance
Unless already done, do the following actions: (1) For airplanes equipped with aileron trim tab assembly, part number (P/N) 527.15.12.037 or 527.15.12.038; or aileron assembly, P/N 557.05.12.015, 557.05.12.016, 557.05.12.017, or 557.05.12.018: Within 12 months after August 20, 2015 (the effective date of this AD), replace the aileron tab counter balance weight and re-identify the aileron trim tab assembly following the instructions of PILATUS PC-12 Service Bulletin No: 27-021, dated January 20, 2015. (2) For airplanes that on August 20, 2015 (the effective date of this AD) has an aileron trim tab assembly, P/N 527.15.12.037 or 527.15.12.038, installed: After modification of that airplane as required by paragraph (f)(1) of this AD, do not install another aileron trim tab assembly with P/N 527.15.12.037 or 527.15.12.038. (3) For airplanes that on August 20, 2015 (the effective date of this AD) does not have an aileron trim tab assembly, P/N 527.15.12.037 or 527.15.12.038, installed: After August 20, 2015 (the effective date of this AD), do not install an aileron trim tab assembly with P/N 527.15.12.037 or 527.15.12.038. (4) For all airplanes: After August 20, 2015 (the effective date of this AD), you are allowed to install on an airplane an aileron assembly, having a P/N 557.05.12.015, 557.05.12.016, 557.05.12.017, or 557.05.12.018, provided that an aileron trim tab assembly, P/N 527.15.12.037 or 527.15.12.038 is not installed on that aileron assembly.
Required actions
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.
Unsafe condition
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 aileron trim tab disconnecting above 10,000 feet altitude. We are issuing this AD to prevent undamped airplane vibrations, potentially resulting in structural failure in case of a disconnected aileron trim tab.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1