# Proposed AD FAA-2020-0854: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-04-11
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 1, 2020, 85 FR 61889
- Comments due: November 16, 2020
- Became: [AD 2021-04-11](https://openairdocs.org/ad/2021-04-11)
- Docket: FAA-2020-0854 (https://www.regulations.gov/docket/FAA-2020-0854, where comments are filed)
- Project: MCAI-2020-01067-T
- FR document: 2020-21543
- Official PDF: https://openairdocs.org/files/sha256/a8/5e/a85eaf7474567c1205b4e21b2e2735e87be7f6c0d42c221b54dc3ec1d10a0355 (from https://www.govinfo.gov/content/pkg/FR-2020-10-01/pdf/2020-21543.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/10/01/2020-21543/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B577AC56A80DD72862585F40043706B.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0854

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2020-01-10, which applies to certain Airbus SAS Model A350-941 airplanes. AD 2020-01-10 requires installing flight control and guidance system (FCGS) software (SW) X11 Standard (STD). Since the FAA issued AD 2020-01-10, Airbus has developed a modification that forces the air generation system (AGS) ram air outlet doors to be flush in cases of total engine flameout or loss of the main electrical supply. Because of this additional modification, certain airplanes that were excluded from the applicability of AD 2020-01-10 are included in the applicability of this proposed AD. This proposed AD would retain the requirements of AD 2020-01-10, require modifying the electrical power supply of the AGS ram air outlet door actuators, and expand the applicability by adding airplanes, as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 1, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-21543, comments due Nov 16, 2020 (https://www.federalregister.gov/documents/2020/10/01/2020-21543/airworthiness-directives-airbus-sas-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.