# Proposed AD FAA-2021-0131: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-15-11
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 8, 2021, 86 FR 13239
- Comments due: April 22, 2021
- Became: [AD 2021-15-11](https://openairdocs.org/ad/2021-15-11)
- Docket: FAA-2021-0131 (https://www.regulations.gov/docket/FAA-2021-0131, where comments are filed)
- Project: MCAI-2020-01628-T
- FR document: 2021-04442
- Official PDF: https://openairdocs.org/files/sha256/41/b8/41b8cef685576d26c4009245af3cd3f8572f5f89bd964abbbd9ec06222f0acef (from https://www.govinfo.gov/content/pkg/FR-2021-03-08/pdf/2021-04442.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/08/2021-04442/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E900B086D1752F7B862586920060E94A.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0131

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A330-200, -300, -800, and -900 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. This proposed AD was prompted by reports that certain oxygen supply solenoid valves are a potential source of increased flow resistance within the flightcrew oxygen system. This proposed AD would require a special detailed inspection (flow test) of certain solenoid valves, and replacement if necessary, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 8, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-04442, comments due Apr 22, 2021 (https://www.federalregister.gov/documents/2021/03/08/2021-04442/airworthiness-directives-airbus-sas-airplanes)

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