Airworthiness directives › 2017-22-01
AD 2017-22-01 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
Applicability*9
This AD becomes effective November 8, 2017.
Compliance
(1) The Manager, Boston ACO Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Nick Rediess, Aviation Safety Engineer, Boston ACO Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, MA 01803; telephone (781) 238-7159; email nicholas.rediess@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR 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 letter CCS-92-APL-17-0001, dated July 31, 2017, which is not incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact Sikorsky Aircraft Corporation, Customer Service Engineering, 124 Quarry Road, Trumbull, CT 06611; telephone 1-800-Winged-S or 203-416-4299; email wcs_cust_service_eng.gr-sik@lmco.com. You may review this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy, Room 6N-321, Fort Worth, TX 76177.
Unsafe condition
Within 10 hours time-in-service, revise the operating limitations section of the Rotorcraft Flight Manual by adding the information in Figure 1 to paragraph (e) of this AD as paragraph 4, System Limits, in Section 1 of Sikorsky SA S92A-RFM-003 Rotorcraft Flight Manual Supplement (RFMS) No. 4 for the SAR AFCS (Sikorsky SA S92A-RFM-003 RFMS No. 4). This action may be done by: (1) Inserting a copy of this AD; (2) Making pen-and-ink changes; or (3) Inserting pages 1-2 and 1-3/1-4 of Sikorsky SA S92A-RFM-003 RFMS No. 4, Revision 1, approved October 6, 2017. Using a different Sikorsky SA S92A-RFM-003 RFMS No. 4 revision with information identical to that in paragraph 4, System Limits, from Section 1 of Sikorsky SA S92A-RFM-003 RFMS No. 4, Revision 1, approved October 6, 2017, is acceptable for compliance with the requirements of this AD. ER24OC17.005
Affected ADs
This AD defines the unsafe condition as a software defect in the FCC. This condition could result in unintended decoupling of the flight director in all three axes and flight into terrain.
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