Airworthiness Directive · Amendment 39-17498 · Engine controls
Pilatus Aircraft Ltd. Airplanes
This AD applies to PILATUS Aircraft Ltd. Model PC-7 airplanes, all serial numbers, certificated in any category.
We are adopting a new airworthiness directive (AD) for all PILATUS Aircraft Ltd. Model PC-7 airplanes. 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 a need to incorporate new revisions into the Limitations section of the FAA-approved maintenance program (e.g., maintenance manual). The limitations were revised to include an emergency fuel control system adjustment test. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions as specified in paragraphs (f)(1) and (f)(2) of this AD:
(1) Within the next 90 days after August 14, 2013 (the effective date of this AD) and repetitively thereafter at intervals not to exceed 300 hours time-in-service, do the Emergency Fuel Control System-Adjustment/Test following the Functional Test Procedures on pages 501 and 502 of Section 76-20-00, Emergency Fuel Control System, of Chapter 76, Engine Controls, dated November 30, 2010, found in PILATUS PC-7 Turbo Trainer Aircraft Maintenance Manual, Document No. 01715, Revision 27 USA, dated November 30, 2010.
Note 1 to paragraph (f)(1) of this AD: Federal Office of Civil Aviation of Switzerland AD No. HB-2013-003, dated April 2, 2013, requires inserting, in its entirety, the revised Chapter/Section 05-10-20, Time Limited Inspection Requirements, of PILATUS PC-7 Turbo Trainer Aircraft Maintenance Manual, Document No. 01715, Revision 31, dated November 30, 2012, into the Limitations section of the aircraft maintenance manual. However, only the section referring to Chapter 76—Engine Controls found on page 4 of the revised Chapter 5 pertains to the requirements of this AD. Other chapters in the revised Chapter 5 are covered in other AD actions.
(2) As a result of the functional test required in paragraph (f)(1) of this AD, if a discrepancy is found that is not identified in the document listed in paragraph (f)(1) of this AD, before further flight after finding the discrepancy, contact Pilatus Aircraft Ltd. at the address specified in paragraph (i)(3) of this AD for an FAA-approved repair scheme approved specifically for compliance with this AD and incorporate the repair.
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.
Aircraft
