# Proposed AD FAA-2019-0722: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-01-14
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 28, 2019, 84 FR 57663
- Comments due: December 12, 2019
- Became: [AD 2020-01-14](https://openairdocs.org/ad/2020-01-14)
- Docket: FAA-2019-0722 (https://www.regulations.gov/docket/FAA-2019-0722, where comments are filed)
- FR document: 2019-23394
- Official PDF: https://openairdocs.org/files/sha256/3a/cb/3acb18227d52f9d19690e9f37de192fa526f84a87bb9756e2129cca50cfc22fb (from https://www.govinfo.gov/content/pkg/FR-2019-10-28/pdf/2019-23394.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/10/28/2019-23394/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9A124D72A8294E8F862584A1004EE09D.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0722

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A300 series airplanes. This proposed AD was prompted by a report that bleed and air conditioning systems were contaminated by hydraulic fluid, and an investigation revealed that hydraulic fluid contaminations caused the failure of check valves installed on the hydraulic reservoir air pressurization system. This proposed AD would require repetitive functional tests of the hydraulic reservoir air pressurization lines and repair or replacement, if necessary, 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 28, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-23394, comments due Dec 12, 2019 (https://www.federalregister.gov/documents/2019/10/28/2019-23394/airworthiness-directives-airbus-sas-airplanes)

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