# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2023-09-25 · Effective 2023-10-30 · 88 FR 65585
## Document
- **Document number:** 2023-20646
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 88 FR 65585
- **Publication date:** 2023-09-25
- **Effective date:** 2023-10-30
- **FAA docket:** Docket No. FAA-2023-1217
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A330-200 series; A330-200 Freighter series; A330-300 series; A330-800 series; A330-900 series; A340-200 series; and A340-300 series airplanes. This AD was prompted by reports of cracks found in the scroll housing assembly of Honeywell GTCP331-350 auxiliary power units (APUs). This AD requires replacing each affected APU or re- identifying certain APU scroll housing assemblies, and prohibits the installation of affected parts under certain conditions, 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/2023/09/25/2023-20646/airworthiness-directives-airbus-sas-airplanes)
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