Airworthiness directives › 2012-08-01
AD 2012-08-01 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
Applicability*9
This AD becomes effective May 24, 2012.
Compliance
(1) The Manager, Boston Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: John Coffey, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; telephone (781) 238-7173; email john.coffey@faa.gov. (2) For operations conducted under a Part 119 operating certificate or under Part 91, Subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before operating any aircraft complying with this AD through an AMOC.
Required actions
Sikorsky Rotorcraft Flight Manuals SA S92A-RFM-002, Revision 8; -003, Revision 7; -004, Revision 6; -005, Revision 5; and -006, Revision 6, all dated April 9, 2008, which are not incorporated by reference, contain additional information about the subject of this AD. For this service information, contact Sikorsky Aircraft Corporation, Attn: Manager, Commercial Technical Support, Mailstop s581a, 6900 Main Street, Stratford, CT 06614; telephone (800) 562-4409; email tsslibrary@sikorsky.com; or at http://www.sikorsky.com. You may review a copy of this service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137.
Unsafe condition
Within 90 days: (1) By making pen and ink changes, insert into the Operating Limitations section, Part 1, Section 1, Weight Limits, of Rotorcraft Flight Manuals (RFMs) SA S92A-RFM-002, -003, -004, -005, and -006 the following limitation “Performance credit for above specification engine power margin is prohibited.” (2) If the RFM already contains the revisions appropriate for your helicopter as listed in the following Table 1, all dated April 9, 2008, with the correct performance charts, without the performance credit as depicted in the circled area of Figure 1 of this AD, the operating limitation required by paragraph (1) of this AD does not need to be inserted into the RFM. Table 1 Affected RFM Revision with correct charts S92A-RFM-002 Revision 8. S92A-RFM-003 Revision 7. S92A-RFM-004 Revision 6. S92A-RFM-005 Revision 5. S92A-RFM-006 Revision 6. Note to paragraph (e)(2) of this AD: Previous RFM revisions allowed for the use of above-specification engine power margin as depicted in the circled area of Figure 1 of this AD. Er19AP12.000
Affected ADs
This AD defines the unsafe condition as inaccurate above specification engine power margin data. This condition could result in the use of inaccurate engine performance data in calculating maximum gross weight.
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