# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2021-06-11 · Effective 2021-07-16 · 86 FR 31095
## Document
- **Document number:** 2021-12175
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 31095
- **Publication date:** 2021-06-11
- **Effective date:** 2021-07-16
- **FAA docket:** Docket No. FAA-2021-0140
## Abstract

The FAA is adopting 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 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 AD requires replacing each affected halon outlet tube with a flexible hose, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/06/11/2021-12175/airworthiness-directives-airbus-sas-airplanes)
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