2024-03-01: Turbine 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: 2024-03-01 Pratt & Whitney Canada Corp.: Amendment 39-22670; Docket No. FAA-2023-2147; Project Identifier MCAI-2023-00663-E. (a) Effective Date This airworthiness directive (AD) is effective March 27, 2024. (b) Affected ADs None. (c) Applicability This AD applies to Pratt & Whitney Canada Corp. Model PW307A and PW307D engines. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by a root cause analysis of an event involving an International Aero Engines AG Model V2533-A5 engine, which experienced an uncontained failure of a high-pressure turbine (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 and 2nd-stage disks. The unsafe condition, if not addressed, could result in uncontained HPT disk failure, damage to the engine, damage to the airplane, and loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Except as specified in paragraphs (h) and (i) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, Transport Canada AD CF-2023-30, dated May 8, 2023 (Transport Canada AD CF-2023-30). (h) Exceptions To Transport Canada AD CF-2023-30 (1) Where Transport Canada AD CF-2023-30 requires compliance from its effective date, this AD requires using the effective date of this AD. (2) Where paragraph A. of Transport Canada AD CF-2023-30 specifies "Before 31 January 2027," replace that text with "Within 36 months after the effective date of this AD." (3) Where paragraph B. of Transport Canada AD CF-2023-30 specifies "At the next opportunity, when the affected engine is disassembled and access is available to the HPT disk, remove any affected HPT disk listed in Table 2 or Table 4 below and replace the affected HPT disk with a serviceable part," replace that text with "For any engine with an installed HPT disk listed in Table 2 or Table 4 [of Transport Canada AD CF-2023-30], at the next piece-part exposure, remove the affected HPT disk from service and replace with a serviceable part." (i) No Reporting Requirement Although the service information referenced in Transport Canada AD CF-2023-30 specifies to submit certain information to the manufacturer, this AD does not include that requirement. (j) Definitions (1) For the purpose of this AD, "piece-part exposure" is when the affected part is removed from the engine and completely disassembled. (2) For the purpose of this AD, a "serviceable part" is any HPT disk that is not identified in Tables 1 through 4 of Transport Canada AD CF-2023-30. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, International Validation 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 International Validation Branch, send it to the attention of the person identified in paragraph (l) of this AD and email to: ANE-AD-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. (l) Additional Information For more information about this AD, contact Barbara Caufield, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (781) 238-7146; email: barbara.caufield@faa.gov. (m) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Transport Canada AD CF-2023-30, dated May 8, 2023. (ii) [Reserved] (3) For Transport Canada AD CF-2023-30, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; phone: (888) 663-3639; email: TC.AirworthinessDirectives-Consignesdenavigabilite.TC@tc.gc.ca; website: tc.canada.ca/en/aviation. (4) You may view this service information at the 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 (817) 222-5110. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov. Issued on January 31, 2024. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2024-03442 Filed 2-20-24; 8:45 am]BILLING CODE 4910-13-P