2020-22-18: Turbine Engine Reduction Gear

Adoption of 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 (AD): \n\n2020-22-18 Rolls-Royce Corporation (Type Certificate previously held by Allison Engine Company): Amendment 39-21314; Docket No. FAA-2020- 0687; Project Identifier AD-2020-00571-E. \n\n(a) Effective Date \n\n\n\tThis AD is effective December 15, 2020. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to all Rolls-Royce Corporation (RRC) (Type Certificate previously held by Allison Engine Company) AE 2100A, AE 2100D2, AE 2100D2A, and AE 2100P model turboprop engines. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7210, Turbine Engine Reduction Gear. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by a report of a propeller gearbox (PGB) development test in which high vibration occurred due to a fatigue crack that initiated in the propeller shaft. The FAA is issuing this AD to prevent loss of the propeller. The unsafe condition, if not addressed, could result in damage to the engine and damage to the airplane. \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) No later than the next shop visit for the engine with the PGB, or the next shop visit for the PGB only, whichever shop visit occurs first after the effective date of this AD, assign usage hours to the installed PGB shaft and carrier assembly using RRC Alert Service Bulletin (ASB) AE 2100A-A-72-322/AE 2100P-A-72-047, Revision 1 (single document), dated May 11, 2018, or RRC ASB AE 2100D2-A-72- 111/AE 2100D3-A-72-313/AE 2100J-A-72-111, Revision 1(single document), dated May 28, 2018. \n\t(2) After the effective date of this AD, before exceeding the life limit (usage hours) specified in Table 1 to paragraph (g)(2) (Table 1) of this AD, remove the PGB shaft and carrier assembly, identified by part numbers (P/Ns) in Table 1, from service and replace with a part eligible for installation. \n\n((Page 71534)) \n\n(GRAPHIC) (TIFF OMITTED) TR10NO20.001 \n\n(h) No Reporting Requirement \n\n\n\tThe reporting requirements in RRC ASB AE 2100A-A-72-322/AE 2100P-A-72-047, Revision 1 (single document), dated May 11, 2018, and RRC ASB AE 2100D2-A-72-111/AE 2100D3-A-72-313/AE 2100J-A-72-111, Revision 1 (single document), dated May 28, 2018, are not required by this AD. \n\n(i) Credit for Previous Actions \n\n\n\tYou may take credit for assigning the usage hours required by paragraph (g) of this AD if you performed the action before the effective date of this AD using RRC ASB AE 2100A-A-72-322/AE 2100P- A-72-047, original issue (single document),dated January 15, 2018, or RR AE 2100D2-A-72-111/AE 2100D3-A-72-313/AE 2100J-A-72-111, original issue (single document), dated January 15, 2018. \n\n(j) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, Chicago 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 (k). \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(k) Related Information \n\n\n\tFor more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago ACO Branch, FAA, 2300 East Devon Avenue, Des Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; email: kyri.zaroyiannis@faa.gov. \n\n(l) 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) Rolls-Royce Corporation (RRC) Alert Service Bulletin (ASB) AE 2100A-A-72-322/AE 2100P-A-72-047, Revision 1 (single document), dated May 11, 2018. \n\t(ii) RRC ASB AE 2100D2-A-72-111/AE 2100D3-A-72-313/AE 2100J-A- 72-111, Revision 1 (single document), dated May 28, 2018. \n\t(3) For RRC service information identified in this AD, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB-01- 06, Indianapolis, IN 46225; phone: 317-230-1667; email: royce.com">CMSEindyOSD@rolls-royce.com; internet: www.rolls-royce.com. \n\t(4) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-7759. \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: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on October 23, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2020-24865 Filed 11-9-20; 8:45 am) BILLING CODE 4910-13-P