2026-14-03: Engine Fuel Distribution

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: 2026-14-03 General Electric Company: Amendment 39-23404; Docket No. FAA-2026-2717; Project Identifier AD-2025-01668-E. (a) Effective Date This airworthiness directive (AD) is effective August 21, 2026. (b) Affected ADs None. (c) Applicability This AD applies to all General Electric Company (GE) engines listed in paragraphs (c)(1) and (2) of this AD with a fuel tube hose installed having a part number (P/N) identified in table 1 to paragraph (c) of this AD. (1) GEnx-1B engines: Model GEnx-1B64, GEnx-1B64/P1, GEnx-1B64/P2, GEnx-1B67, GEnx-1B67/P1, GEnx-1B67/P2, GEnx-1B70, GEnx-1B70/75/P1, GEnx-1B70/75/P2, GEnx-1B70/P1, GEnx-1B70/P2, GEnx-1B70C/P1, GEnx-1B70C/P2, GEnx-1B74/75/P1, GEnx-1B74/75/P2, GEnx-1B76/P2, and GEnx-1B76A/P2. (2) GEnx-2B engines: Model GEnx-2B67, GEnx-2B67B, and GEnx-2B67/P. Table 1 to Paragraph ( c )-Affected Fuel Tube Hoses Engine model Part name P/N GEnx-1B Fuel cooled oil cooler (FCOC) fuel return hose manifold 2426M07P01 FCOC fuel cooling inlet tube hose 2426M08P01 GEnx-2B Heat exchanger fuel tube hose 2477M34P01 Heat exchanger inlet fuel tube hose 2477M35P01 (d) Subject Joint Aircraft System Component (JASC) Code 7310, Engine Fuel Distribution. (e) Unsafe Condition This AD was prompted by a report of a fuel leak caused by a defective fuel tube hose connecting the main fuel-oil heat exchanger. The FAA is issuing this AD to prevent cracking and fuel leakage in affected fuel tube hoses. The unsafe condition, if not addressed, could result in uncontrolled engine fire and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Definitions For the purpose of this AD: (1) A "part eligible for installation" is any fuel tube hose that does not have a P/N identified in table 1 to paragraph (c) of this AD with preform manufacturing lot number 684141 or 677536. (2) An "engine shop visit" is the induction of an engine into the shop for any maintenance. (h) Required Actions (1) At the next engine shop visit after the effective date of this AD, identify the preform manufacturing lot number for the FCOC fuel return hose manifold, FCOC fuel cooling inlet tube hose, heat exchanger fuel tube hose, and heat exchanger inlet fuel tube hose in accordance with the following, as applicable: (i) For GEnx-1B engines, Figure 1 of GE GEnx-1B Service Bulletin (SB) 73-0116 R00, dated November 4, 2025 (GE GEnx-1B SB 73-0116 R00). (ii) For GEnx-2B engines, Figure 1 of GE GEnx-2B SB 73-0108 R00, dated November 4, 2025 (GE GEnx-2B SB 73-0108 R00). (2) If the preform manufacturing lot number of the affected fuel tube hose is 684141 or 677536, before further flight, remove the affected fuel tube hose and replace it with a part eligible for installation. (i) No Reporting Requirement Where GE GEnx-1B SB 73-0116 R00 and GE GEnx-2B SB 73-0108 R00 require reporting part identification for affected fuel tube hoses, this AD does not require that action. (j) Alternative Methods of Compliance (AMOCs) 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 the AIR-520 Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: AMOC@faa.gov. 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. (k) Additional Information For more information about this AD, contact Itanza Young, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (206) 482-6306; email: itanza.n.young@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) GE GEnx-1B Service Bulletin (SB) 73-0116 R00, dated November 4, 2025. (ii) GE GEnx-2B SB 73-0108 R00, dated November 4, 2025. (3) For GE material identified in this AD, contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; phone: (513) 552-3272; email: aviation.fleetsupport@ge.com; website: ge.com. (4) You may view this material 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 July 6, 2026. Brian Knaup, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2026-14478 Filed 7-16-26; 8:45 am]BILLING CODE 4910-13-P