AD 2025-25-02 Airworthiness Directives; Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide)

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.

Comply with this AD within the compliance times specified, unless already done.

(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.

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.

None.