# Airworthiness Directives; Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide) Portable Breathing Equipment (PBE)
> **Rule** · Final rule; request for comments. · Published 2026-02-25 · Effective 2026-03-12 · 91 FR 9137
## Document
- **Document number:** 2026-03799
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 91 FR 9137
- **Publication date:** 2026-02-25
- **Effective date:** 2026-03-12
- **FAA docket:** Docket No. FAA-2026-0744
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Aerospace & Defense Oxygen Systems SaS portable breathing equipment (PBE). This AD was prompted by reports of occurrences of PBE not delivering oxygen once donned. This AD requires replacing affected PBE and prohibits the installation of affected PBE. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/02/25/2026-03799/airworthiness-directives-aerospace-and-defense-oxygen-systems-sas-part-of-safran-aerosystems)
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