2025-25-02: 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: 2025-25-02 Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide): Amendment 39-23210; Docket No. FAA-2025-5041; Project Identifier MCAI-2025-01620-Q. (a) Effective Date This airworthiness directive (AD) is effective December 24, 2025. (b) Affected ADs None. (c) Applicability This AD applies to Aerospace & Defense Oxygen Systems SaS (part of Safran Aerosystems) (formerly known as Air Liquide) portable breathing equipment (PBE), part number (P/N) 15-40F-11 and P/N 15-40F-80, all serial numbers. These PBEs are eligible for installation on any aircraft and may have been installed during the aircraft manufacturing process (production line), or in-service modification, either through a supplemental type certificate, or using type certificate holder (TCH) approved modification instructions, or through a non-TCH modification approval. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Reason This AD was prompted by reports of occurrences of incorrect usage of certain PBEs. The FAA is issuing this AD to address incorrect usage of PBEs. The unsafe condition, if not addressed, could lead to flight or cabin crewmember incapacitation, possibly affecting crewmember capability to accomplish tasks during an emergency, or resulting in fatal injury to that crewmember. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Incorporation of Revised Procedures (1) For transport category airplanes: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate revised procedures for donning PBE P/N 15-40F-11 and P/N 15-40F-80 as specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. The incorporation of revised procedures includes replacing the pictograms identified in 3.A., "General," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025, with the applicable procedure specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. (2) For aircraft certificated in any category except for transport category airplanes: Accomplish the applicable action specified in paragraph (g)(2)(i) or (ii) of this AD. The owner/operator (pilot) holding at least a private pilot certificate may perform this action for your aircraft and must enter compliance with the applicable paragraphs of this AD into the aircraft maintenance records in accordance with 14 CFR 43.9(a) and 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (i) For aircraft that must comply with 14 CFR 91.417(a)(2) or 135.439(a)(2): Within 30 days after the effective date of this AD, incorporate into maintenance records required by 14 CFR 91.417(a)(2) or 135.439(a)(2), as applicable for your aircraft, revised procedures for donning PBE P/N 15-40F-11 and P/N 15-40F-80 as specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. The incorporation of revised procedures includes replacing the pictograms identified in 3.A., "General," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025, with the applicable procedure specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. (ii) For non-transport category aircraft other than those identified in paragraph (g)(2)(i) of this AD: Within 30 days after the effective date of this AD, revise your existing approved maintenance or inspection program, as applicable, by incorporating revised procedures for donning PBE P/N 15-40F-11 and P/N 15-40F-80 as specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. The incorporation of revised procedures includes replacing the pictograms identified in 3.A., "General," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025, with the applicable procedure specified in paragraph 3.C., "Procedure," of Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. (h) No Alternative Procedures After incorporating revised procedures as required by paragraph (g) of this AD, no alternative procedures may be used unless the procedures are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (i)(1) of this AD. (i) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): 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 responsible Flight Standards 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 (j) 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. (j) Additional Information For more information about this AD, contact Harjot Rana, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7344; email: [email protected]. (k) 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 this AD specifies otherwise. (i) Safran Aerosystems Service Bulletin 1540F-35-001, dated October 10, 2025. (ii) [Reserved] (3) For Safran Aerosystems material, contact Safran Aerosystems, Customer Support & Services, Technical Publication Department, 61 Rue Pierre Curie, CS20001, 78373 Plaisir Cedex, France; phone: + 33 (0)1 61 34 23 23; email: [email protected]; website: https://www.safran-aerosystems.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 December 3, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-22338 Filed 12-5-25; 4:15 pm]BILLING CODE 4910-13-P