2025-11-12: 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: a. Removing Airworthiness Directive (AD) 2020-03-14, Amendment 39-19839 (85 FR 11282, February 27, 2020); and b. Adding the following new AD: 2025-11-12 Airbus SAS: Amendment 39-23058; Docket No. FAA-2025-0343; Project Identifier MCAI-2024-00562-T. (a) Effective Date This airworthiness directive (AD) is effective July 15, 2025. (b) Affected ADs This AD replaces AD 2020-03-14, Amendment 39-19839 (85 FR 11282, February 27, 2020) (AD 2020-03-14). (c) Applicability This AD applies to all Airbus SAS Model A350-941 and -1041 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Unsafe Condition This AD was prompted by loss of retention of the regulator inlet filter retainer on certain crew oxygen cylinder assemblies. The FAA is issuing this AD to address loss of retention of the regulator inlet filter retainer on certain crew oxygen cylinder assemblies. The unsafe condition, if not addressed, could result in particle ingestion into the regulator during ground handling, possibly resulting in ignition/fire during system ground operational testing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2024-0186, dated September 24, 2024 (EASA AD 2024-0186). (h) Exceptions to EASA AD 2024-0186 (1) Where EASA AD 2024-0186 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2024-0186 refers to July 30, 2019 (the effective date of EASA AD 2019-0168), this AD requires using April 2, 2020 (the effective date of AD 2020-03-14). (3) Where paragraphs (1) and (2) of EASA AD 2024-0186 state "the instructions of the AOT", this AD requires replacing that text with "paragraph 4.2.2., Inspection Requirements, of the AOT." (4) Where paragraph (1) of EASA AD 2024-0186 specifies to "inspect each affected part", this AD requires replacing that text with "do a one-time inspection of any affected part that is installed on-wing". (5) Where paragraph (2) of EASA AD 2024-0186 specifies if "any discrepancy is detected, as defined in the AOT," this AD requires replacing those words with "any loose part making a sound during agitation of the cylinder is detected". (6) This AD does not adopt the "Remarks" section of EASA AD 2024-0186. (i) No Reporting and No Return of Parts Requirements Although the material referenced in EASA AD 2024-0186 specifies to submit certain information and send removed parts to the manufacturer, this AD does not include those requirements. (j) Additional AD Provisions The following provisions also apply to this AD: (1) 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 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 (k) of this AD and email to: [email protected] . Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, AIR-520, Continued Operational Safety Branch, FAA; or EASA; or Airbus SAS's EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. (3) Required for Compliance (RC): Except as required by paragraphs (i) and (j)(2) of this AD, if any material referenced in EASA AD 2024-0186 contains paragraphs that are labeled as RC, the instructions in RC paragraphs, including subparagraphs under those paragraphs, must be done to comply with this AD; any paragraphs, including subparagraphs under those paragraphs, that are not identified as RC are recommended. The instructions in paragraphs, including subparagraphs under those paragraphs, not identified as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the instructions identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to instructions identified as RC require approval of an AMOC. (k) Additional Information For more information about this AD, contact Nicole Tsang, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 206-231-3959; email [email protected]. (l) 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 this AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2024-0186, dated September 24, 2024. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email [email protected]. You may find this material on the EASA website at ad.easa.europa.eu. (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 June 4, 2025. Lona C. Saccomando, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025-10485 Filed 6-9-25; 8:45 am]BILLING CODE 4910-13-P