# Proposed AD FAA-2021-0563: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-20-04
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 14, 2021, 86 FR 37087
- Comments due: August 30, 2021
- Became: [AD 2021-20-04](https://openairdocs.org/ad/2021-20-04)
- Docket: FAA-2021-0563 (https://www.regulations.gov/docket/FAA-2021-0563, where comments are filed)
- Project: MCAI-2021-00282-T
- FR document: 2021-14923
- Official PDF: https://openairdocs.org/files/sha256/2d/f2/2df22a5ae9b6d5bb1e36fcce5e47d6515662616a2db8bcd044aa2d84e338dc90 (from https://www.govinfo.gov/content/pkg/FR-2021-07-14/pdf/2021-14923.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/07/14/2021-14923/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F40755F3CA3C6E638625871200757574.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0563

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and -1041 airplanes. This proposed AD was prompted by a report that during flight tests, the opening of the ram air outlet flaps was found to cause a disturbance of the air flow around the ram air turbine (RAT) when the landing gear (L/ G) is extended. This proposed AD would require revising the existing airplane flight manual (AFM) and applicable corresponding operational procedures to provide procedures for all engines failure and L/G gravity extension related to certain software, and installing Airbus temporary quick change (ATQC) V3 for the flight warning system (FWS) software (SW) standard (STD) 6/2.0, 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

- Jul 14, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-14923, comments due Aug 30, 2021 (https://www.federalregister.gov/documents/2021/07/14/2021-14923/airworthiness-directives-airbus-sas-airplanes)

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