# Proposed AD FAA-2021-0140: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-20
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 11, 2021, 86 FR 13836
- Comments due: April 26, 2021
- Became: [AD 2021-11-20](https://openairdocs.org/ad/2021-11-20)
- Docket: FAA-2021-0140 (https://www.regulations.gov/docket/FAA-2021-0140, where comments are filed)
- Project: MCAI-2020-01531-T
- FR document: 2021-05008
- Official PDF: https://openairdocs.org/files/sha256/39/a5/39a54a7cf80ff7deeff1bfd7d99054f5f3129953b4290097b2052e9012ca30da (from https://www.govinfo.gov/content/pkg/FR-2021-03-11/pdf/2021-05008.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/11/2021-05008/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3AEDB3A083719BF86258695006EB37A.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0140

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A330-200, A330-300, A340-200, A340-300, A340-500, and A340-600 series airplanes. This proposed AD was prompted by reports that, for certain lower deck mobile crew rest (LDMCR) units, the connection of a certain halon outlet tube to the outlet of a certain fire extinguisher bottle may be incorrect. This proposed AD would require replacing each affected halon outlet tube with a flexible hose, 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 11, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-05008, comments due Apr 26, 2021 (https://www.federalregister.gov/documents/2021/03/11/2021-05008/airworthiness-directives-airbus-sas-airplanes)

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