2021-19-17: Cabin Equipment/Furnishings, Passenger Compartment Equipment

The Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive: \n\n\n\n\n\n((Page 57558)) \n\n\n\n2021-19-17 Sikorsky Aircraft Corporation: Amendment 39-21735; Docket No. FAA-2021-0106; Project Identifier AD-2020-00708-R. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective November 22, 2021. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to Sikorsky Aircraft Corporation Model S-92A helicopters, certificated in any category, with the following installed: \n\t(1) A Martin-Baker side facing utility seat supplier part number (P/N) MBCS12410AA001 with a serial number (S/N) identified in Table 2 of Martin-Baker Special Information Leaflet (SIL) No. 831, dated July 10, 2019 (SIL 831), that is not marked with ''SIL831 incorporated;'' or \n\t(2) A Martin-Baker observer seat supplier P/N MBCS12200 or MBCS7301-2 with an S/N identified in Table 2 of Martin-Baker SIL No. 833, dated July 11, 2019 (SIL 833), that is not marked with ''SIL833 incorporated.'' \n\tNote 1 to paragraph (c): SIL 831 and SIL 833 are attached to Sikorsky S-92A Helicopter Alert Service Bulletin ASB 92-25-026, Basic Issue, dated March 5, 2020 (ASB 92-25-026). \n\tNote 2 to paragraph (c): Section 3., the Accomplishment Instructions, Tables 1 and 2 of ASB 92-25-026, specify cross references of Martin-Baker supplier P/Ns with Sikorsky P/Ns and kit P/Ns. \n\tNote 3 to paragraph (c): The marking ''SIL831 incorporated'' or ''SIL833 incorporated,'' as applicable, could be located adjacent to identification labels on the underside of the sitting platform assembly P/N MBCS4111 or MBCS12215, respectively. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code: 2500, Cabin Equipment/Furnishings; and 2520, Passenger Compartment Equipment. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by an incident of a side facing utility seat detaching from wall attachment points during dynamic testing. The FAA is issuing this AD to detect and address a main back tube, a component of the main back tube assembly, which does not meet design specifications. The unsafe condition, if not addressed, could result in increased surface friction in the direction of the seat attenuation, failure of proper utility seat attenuation during a crash event, excessive lumbar loads during a crash event, and subsequent excessive occupant injury. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Required Actions \n\n\n\t(1) Within 125 hours time-in-service or six months after the effective date of this AD, whichever occurs first, replace each main back tubeassembly by following Section 3., Accomplishment Instructions, paragraphs C. through E., of ASB 92-25-026; except where the service information referenced in ASB 92-25-026 specifies destroying and disposing of parts or discarding parts, this AD requires removing those parts from service instead. \n\tNote 4 to paragraph (g)(1): SIL 831 and SIL 833, referred to in ASB 92-25-026, refer to main back tube assembly as tube assembly, back main. \n\t(2) As of the effective date of this AD, do not install a Martin-Baker side facing utility seat identified in paragraph (c)(1) of this AD or a Martin-Baker observer seat identified in paragraph (c)(2) of this AD unless the actions in paragraph (g)(1) of this AD have been accomplished. \n\n(h) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, Boston ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (i) of this AD. \n\t(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. \n\n(i) Related Information \n\n\n\tFor more information about this AD, contact Dorie Resnik, Aerospace Engineer, Aviation Safety Section, Boston ACO Branch, FAA, 1200 District Ave., Burlington, MA 01803; phone: (781) 238-7693; email: dorie.resnik@faa.gov. \n\n(j) Material Incorporated by Reference \n\n\n\t(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. \n\t(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. \n\t(i) Sikorsky S-92A Helicopter Alert Service Bulletin ASB 92-25- 026, Basic Issue, dated March 5, 2020, with attachments: \n\t(A) Martin-Baker Special Information Leaflet (SIL) No. 831, dated July 10, 2019; and \n\t(B) Martin-Baker SIL No. 833, dated July 11, 2019. \n\t(ii) (Reserved) \n\t(3) As the design approval holder for the product identified in paragraph (c) of this AD, contact Sikorsky Aircraft Corporation for Martin-Baker service information, as well as Sikorsky S-92A helicopter service information identified in this AD, by contacting your local Sikorsky Field Representative or Sikorsky's Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611; telephone 1-800-946-4337 (1- 800-Winged-S); email wcs_cust_service_eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at https://www.sikorsky360.com. \n\t(4) You may view this service information at FAA,Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N- 321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222-5110. \n\t(5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on September 8, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-22464 Filed 10-15-21; 8:45 am) BILLING CODE 4910-13-P