Data / Federal rules / 2025-22338
Airworthiness Directives; Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide)
The Federal Aviation Administration published this final rule in the Federal Register on December 9, 2025. It took effect on December 24, 2025. Comments closed on January 23, 2026.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all aircraft equipped with certain Aerospace & Defense Oxygen Systems SaS portable breathing equipment (PBE). This AD was prompted by reports of occurrences of incorrect usage of certain PBEs. This AD requires incorporating revised procedures for donning the PBE. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-22338
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- December 9, 2025
- Takes effect
- December 24, 2025
- Comments due
- January 23, 2026
- Dates
- This AD is effective December 24, 2025.
- Docket
- Docket No. FAA-2025-5041; Project Identifier MCAI-2025-01620-Q; Amendment 39-23210; AD 2025-25-02
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in December 2025
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.