2021-19-10: Turbine Section

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\n2021-19-10 International Aero Engines, LLC: Amendment 39-21728; Docket No. FAA-2021-0780; Project Identifier AD-2021-00916-E. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective September 27, 2021. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to International Aero Engines, LLC (IAE) PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, and PW1133G-JM model turbofan engines with an installed: \n\t(1) High-pressure turbine (HPT) 1st-stage disk, part number (P/N) 30G6201 or 30G7301, with a serial number (S/N) listed in Figure 1 to paragraph (c) of this AD; or \n\t(2) HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph (c) of this AD. \n\nBILLING CODE 4910-13-P (GRAPHIC) (TIFF OMITTED) TR10SE21.000 \n\n\n\n((Page 50613)) \n\n\n\n(GRAPHIC) (TIFF OMITTED) TR10SE21.001 \n\nBILLING CODE 4910-13-C \n\n((Page 50614)) \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7250, Turbine Section. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by an analysis performed by Pratt & Whitney of an event involving an uncontained failure of an HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to prevent failure of the HPT 1st-stage and HPT 2nd-stage disks. The unsafe condition, if not addressed, could result in uncontained HPT disk failure, release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane.(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) For IAE model turbofan engines with an HPT 1st-stage disk, P/N 30G6201 or 30G7301, with an S/N listed in Figure 1 to paragraph (c) of this AD, within 30 days after the effective days of the AD, remove the HPT 1st-stage disk from service. \n\t(2) For IAE model turbofan engines with an HPT 2nd-stage disk, P/N 30G5502 or 30G6602, with an S/N listed in Figure 2 to paragraph (c) of this AD, within 30 days after the effective days of the AD, remove the HPT 2nd-stage disk from service. \n\n(h) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, ECO 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. Information may be emailed to: ANE-AD-AMOC@faa.gov. \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 Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7229; fax: (781) 238-7199; email: Mark.Taylor@faa.gov. \n\n(j) Material Incorporated by Reference \n\n\n\tNone. \n\n\n\tIssued on September 7, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-19600 Filed 9-8-21; 11:15 am) BILLING CODE 4910-13-P