# Proposed AD FAA-2021-0833: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-25-02
- Products: Airbus
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period.
- Published: June 1, 2022, 87 FR 33076
- Comments due: July 18, 2022
- Became: [AD 2022-25-02](https://openairdocs.org/ad/2022-25-02)
- Docket: FAA-2021-0833 (https://www.regulations.gov/docket/FAA-2021-0833, where comments are filed)
- Project: MCAI-2021-00245-T
- FR document: 2022-11550
- Official PDF: https://openairdocs.org/files/sha256/66/85/668544a1f7916f07abb9d3596b02c0f5d7a9e3c590f2fe2982d543d8081b997d (from https://www.govinfo.gov/content/pkg/FR-2022-06-01/pdf/2022-11550.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/06/01/2022-11550/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-11550-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0833

## Summary

The FAA is revising an earlier proposal to supersede Airworthiness Directive (AD) 2020-18-04, which applies to all Airbus SAS Model A350-941 and -1041 airplanes. This action revises the notice of proposed rulemaking (NPRM) by requiring a modification (replacement of each affected slat power control unit (PCU) with a slat PCU having a different part number), requiring an inspection report, and revising the limitations on the installation of affected parts, 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. Since these actions would impose an additional burden over those in the NPRM, the FAA is reopening the comment period to allow the public the chance to comment on these changes.

## Notices in this docket

- Sep 30, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-20804, comments due Nov 15, 2021 (https://www.federalregister.gov/documents/2021/09/30/2021-20804/airworthiness-directives-airbus-sas-airplanes)
- Jun 1, 2022: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period., FR document 2022-11550, comments due Jul 18, 2022 (https://www.federalregister.gov/documents/2022/06/01/2022-11550/airworthiness-directives-airbus-sas-airplanes)

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