2025-18-02: Oxygen

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: 2025-18-02 The Boeing Company: Amendment 39-23129; Docket No. FAA-2023-2398; Project Identifier AD-2023-00423-T. (a) Effective Date This airworthiness directive (AD) is effective October 22, 2025. (b) Affected ADs None. (c) Applicability This AD applies to all The Boeing Company Model 787-8, 787-9, and 787-10 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Unsafe Condition This AD was prompted by a report indicating that the oxygen supply tubing can become kinked when certain passenger service unit (PSU) oxygen panel assemblies are installed in the forward-most position of a center stow bin. The FAA is issuing this AD to address incorrect installation of the oxygen supply tubing in the PSU oxygen panel assemblies. The unsafe condition, if not addressed, could result in kinked tubing and consequent injury of the airplane's passengers because of a lack of supplemental oxygen during a cabin depressurization event. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection of the Affected Parts For airplanes identified in Boeing Alert Requirements Bulletins B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, and B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023: Except as specified by paragraph (h) of this AD, at the applicable times specified in the "Compliance" paragraph of Boeing Alert Requirements Bulletins B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, or B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, as applicable, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, or B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, as applicable. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB250277-00, Issue 001, dated February 15, 2023, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023. Note 2 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB250278-00, Issue 001, dated February 15, 2023, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023. (h) Exceptions to Requirements Bulletin Specifications (1) Where the Compliance Time columns of the tables in the "Compliance" paragraph of Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, refer to a compliance time of within 24 months after the Issue 001 date of the Requirements Bulletin or within 24 months after date of issuance of original standard certificate of airworthiness or original export certificate of airworthiness, whichever occurs later, this AD requires using within 36 months after the effective date of this AD or within 36 months after date of issuance of original standard certificate of airworthiness or original export certificate of airworthiness, whichever occurs later. (2) Where the Compliance Time columns of the tables in the "Compliance" paragraph of Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, refer to a compliance time of within 24 months after the Issue 001 date of the Requirements Bulletin or within 24 months after date of issuance of original standard certificate of airworthiness or original export certificate of airworthiness, whichever occurs later, this AD requires using within 36 months after the effective date of this AD or within 36 months after date of issuance of original standard certificate of airworthiness or original export certificate of airworthiness, whichever occurs later. (3) Where Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, and Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, specify that the corrective actions for Conditions 2, 2.2, 2.2.2, and 3 must be done before further flight, this AD requires that the corrective actions for those conditions be done within 36 months after the effective date of this AD, or within 36 months after the date of issuance of original standard certificate of airworthiness or original export certificate of airworthiness, whichever occurs later. (i) Optional Replacement Replacement of a PSU oxygen panel assembly, part number (P/N) 4572105-XXX-0D0, 4572175-XXX-0D0, or 4572185-XXX-0D0 that was manufactured in May 2020 or before, with an applicable PSU oxygen panel assembly, P/N 4572105-XXX-0D0, 4572175-XXX-0D0, or 4572185-XXX-0D0 that has the applicable identification label(s) specified in paragraph (i)(1) or (2) of this AD, is acceptable for compliance with the requirements of paragraph (g) of this AD, where "XXX" in the PSU oxygen panel assembly part numbers is any combination of numerals. (1) An identification label with a manufacture date of June 2020 or after. (2) An identification label with a manufacture date of May 2020 or before and a supplier service bulletin modification label marked with the applicable supplier service bulletin number identified in Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, or Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, and the supplier service bulletin date. (j) Parts Installation Prohibition As of the effective date of this AD, no person may install, on any airplane, a PSU oxygen panel assembly, P/N 4572105-XXX-0D0, 4572175-XXX-0D0, or 4572185-XXX-0D0, where the "XXX" in the affected PSU oxygen panel assembly part numbers is any combination of numerals, that was manufactured in May 2020 or before, and does not have a supplier service bulletin modification label marked with an applicable supplier service bulletin number identified in Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023, or Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023, and the supplier service bulletin date. (k) 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (l) of this AD. Information may be emailed to: [email protected]. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (3) An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization (ODA) that has been authorized by the Manager, AIR-520, Continued Operational Safety Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (l) Related Information For more information about this AD, contact Joshua Baek, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 562-627-6725; email: [email protected]. (m) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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) Boeing Alert Requirements Bulletin B787-81205-SB250277-00 RB, Issue 001, dated February 15, 2023. (ii) Boeing Alert Requirements Bulletin B787-81205-SB250278-00 RB, Issue 001, dated February 15, 2023. (3) For Boeing material identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600; telephone 562-797-1717; website myboeingfleet.com . (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. (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 [email protected]. Issued on September 2, 2025. Lona C. Saccomando, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025-17984 Filed 9-16-25; 8:45 am]BILLING CODE 4910-13-P