2021-08-18: Nose/Tail Landing Gear, Main Landing Gear

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: 0 a. Removing Airworthiness Directive 2021-04-16, Amendment 39-21438 (86 FR 13631, March 10, 2021); and 0 b. Adding the following new airworthiness directive: \n\n2021-08-18 Sikorsky Aircraft Corporation (Sikorsky): Amendment 39- 21512; Docket No. FAA-2021-0305; Project Identifier AD-2021-00334-R \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective April 29, 2021. \n\n(b) Affected ADs \n\n\n\tThis AD replaces AD 2021-04-16, Amendment 39-21438 (86 FR 13631, March 10, 2021) (AD 2021-04-16). \n\n(c) Applicability \n\n\n\tThis AD applies to Sikorsky Model S-92A helicopters, certificated in any category, with serial numbers (S/Ns) 920006 through 920334 inclusive. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 3220, Nose/Tail Landing Gear and 3210, Main Landing Gear. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by the discovery that certain part numbers listed in AD 2021-04-16 were incorrect. AD 2021-04-16 was issued after the manufacturer determined that because of non-conforming threads, due to a quality escape, the life limit of the threaded hinge pin and main landing gear (MLG) and nose landing gear (NLG) actuator pins was reduced. The FAA is issuing this AD to correct the errors in AD 2021-04-16 and prevent failure of components on the MLG and NLG. The unsafe condition, if not addressed, could result in damage to the helicopter and reduced ability to control the helicopter during landing. \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\tWithin 300 hours time in serviceafter the effective date of this AD, visually inspect the components of the right MLG assembly, left MLG assembly, and NLG kit for threaded hinge pins part number (P/N) 92250-12281-101 and actuator pins P/N 92250-12287-101 and P/N 92250-12287-103 with S/Ns identified in Table 1 or 2 (threaded hinge pins) or in Table 1 (actuator pins), in Section 3, the Accomplishment Instructions, in the Sikorsky Aircraft Corporation Alert Service Bulletin 92-32-008, Basic Issue, dated January 21, 2020 (the ASB). \n\tNote 1 to the introductory text of paragraph (g): See Figures 1 and 2 in Section 3, the Accomplishment Instructions, in the ASB for guidance on performing the visual inspection. \n\t(1) If there is any threaded hinge pin, P/N 92250-12281-101, with an S/N listed in Table 1 or 2 in the ASB, before further flight, remove the threaded hinge pin from service. \n\t(2) If there is any MLG or NLG actuator pin, P/N 92250-12287-101 or P/N 92250-12287-103, with an S/N listed in Table 1 in the ASB, before further flight, remove the actuator pin from service. \n\n(h) Installation Prohibition \n\n\n\tAs of the effective date of this AD, do not install any threaded hinge pin 92250-12281-101 or actuator pin, P/N 92250-12287-101 or 92250-12287-103 with an S/N listed in Table 1 or 2 in Section 3, the Accomplishment Instructions, in the ASB, on any helicopter. \n\n(i) 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 (j) 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(j) Related Information \n\n\n\tFor more information about this AD, contact Dorie Resnik, Aviation Safety Engineer, Boston ACO Branch, Compliance & Airworthiness Division, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7693; fax: (781) 238-7199; email: dorie.resnik@faa.gov. \n\n((Page 19574)) \n\n(k) Material Incorporated by Reference \n\n\n\t(1) The Director of the Federal Register previously 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(3) The following service information was approved for IBR on April 14, 2021 (86 FR 13631, March 10, 2021). \n\t(i) Sikorsky Aircraft Corporation Alert Service Bulletin 92-32- 008, Basic Issue, dated January 21, 2020. \n\t(ii) (Reserved) \n\t(4) For Sikorsky Aircraft Corporation service information identified in this AD, contact 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(5) You may view this service information at the 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(6) 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: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued onApril 9, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-07687 Filed 4-12-21; 11:15 am) BILLING CODE 4910-13-P