# 2026-03799: FAA Rules Require Replacing Faulty Airplane Oxygen Masks

2026-03799, Airworthiness Directives; Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide) Portable Breathing Equipment (PBE), is a Federal Register rule from Transportation Department, Federal Aviation Administration published 2026-02-25, effective 2026-03-12 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2026-03799
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-03799
- Title: Airworthiness Directives; Aerospace & Defense Oxygen Systems SaS (Part of Safran Aerosystems) (Formerly Known as Air Liquide) Portable Breathing Equipment (PBE)
- Type: Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 9137
- Published: 2026-02-25
- Effective: 2026-03-12
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-06-11

## In one line

FAA Rules Require Replacing Faulty Airplane Oxygen Masks

## Summary

The FAA is making a new rule to fix a problem with certain Aerospace & Defense Oxygen Systems SaS portable breathing equipment (PBE) that sometimes don’t deliver oxygen when needed. If you use this gear, you’ll have to replace the faulty units and can’t install the old ones anymore. This rule kicks in on March 12, 2026, and the FAA wants your feedback by April 13, 2026.

## 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.

## Effects PRIA read

- Mandatory PBE Replacement and Ban: cost, high. If your aircraft has Aerospace & Defense Oxygen Systems SaS portable breathing equipment (PBE) part number 15-40F-11 or 15-40F-80 with a manufacturing date between March 2015 and March 2017 and a serial number listed in Appendix A of Safran Service Bulletin 1540F-35-002 Revision 01, you must replac…
- Estimated Compliance Cost Per Unit: cost, high. The FAA estimates replacement will cost up to $2,585 per PBE (1 work-hour at $85 plus up to $2,500 for parts). The FAA estimates up to 2,642 appliances are affected and estimates a total cost on U.S. operators of up to $6,829,570.
- 10-Year Life Limit Takes Precedence: cost, medium. The affected PBE have a life limit of 10 years (120 months), and that life limit takes precedence over the shorter compliance windows (14 days or 3 months) in the referenced EASA AD. If an affected PBE is over the 10-year life limit, it must be replaced regardless of those shorter compliance times.

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## Sources
- [2026-03799 on federalregister.gov](https://www.federalregister.gov/documents/2026/02/25/2026-03799/airworthiness-directives-aerospace-and-defense-oxygen-systems-sas-part-of-safran-aerosystems)
- [2026-03799 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-02-25/pdf/2026-03799.pdf)

## Related
- [Previous: 2026-03779, Managed Care](https://policyrisk.com/federal-register/2026-03779)
- [Next: 2026-03820, Wyoming: Approval of State Coal Combustion Residuals Permit Program](https://policyrisk.com/federal-register/2026-03820)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-03799 (as of 2026-06-11).