2024-14-04: Turbine Engine Compressor Section

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2024-14-04 International Aero Engines, LLC: Amendment 39-22785; Docket No. FAA-2024-0763; Project Identifier AD-2023-00924-E. (a) Effective Date This airworthiness directive (AD) is effective August 20, 2024. (b) Affected ADs None. (c) Applicability This AD applies to International Aero Engines Model PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G1-JM, PW1127G1A-JM, PW1127G1B-JM, PW1127G-JM, PW1127GA-JM, PW1129G-JM, PW1130G-JM, PW1133G-JM, and PW1133GA-JM engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by an in-flight shutdown caused by the fracture of a low-pressure compressor (LPC) 1st-stage integrally bladed rotor (IBR-1). The FAA is issuing this AD to prevent the failure of the LPC IBR-1. The unsafe condition, if not addressed, could result in damage to the engine, damage to the airplane, and possible loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) For affected engines that have not incorporated Pratt & Whitney Service Bulletin PW1000G-C-72-00-0180-00A-930A-D (initial issue or any revision), and with installed LPC key washers having part number (P/N) 5375416, at the next engine shop visit after the effective date of this AD, remove the affected LPC key washers and replace them with LPC key washers and LPC inlet guide vane (IGV) spacers that are eligible for installation. (2) For affected engines with an installed LPC IBR-1 having P/N 5373831, at the next piece-part exposure after the effective date of this AD, remove the affected LPC IBR-1 and replace with an LPC IBR-1 eligible for installation. (h) Definitions For the purposes of this AD: (1) An "engine shop visit" is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance does not constitute an engine shop visit. (2) A "piece-part exposure" is when the LPC IBR-1 is separated from the LPC module. (3) "LPC key washers eligible for installation" are any LPC key washers having P/N 5375434 or later-approved P/N. (4) "LPC IGV spacers eligible for installation" are any LPC IGV spacers having P/N 5375433 or later-approved P/N. (5) An "LPC IBR-1 eligible for installation" is any LPC IBR-1 having P/N 5373841 or later-approved P/N. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR-520 Continued Operational Safety 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 AIR-520 Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (j) of this AD and email to: AMOC@faa.gov. (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. (j) Additional Information For more information about this AD, contact Carol Nguyen, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238-7655; email: carol.nguyen@faa.gov. (k) Material Incorporated by Reference None. Issued on July 10, 2024. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2024-15466 Filed 7-15-24; 8:45 am]BILLING CODE 4910-13-P