# Airworthiness Directives; Airbus Helicopters
> **Rule** · Final rule; request for comments. · Published 2021-11-24 · Effective 2021-12-09 · 86 FR 66934
## Document
- **Document number:** 2021-25635
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 86 FR 66934
- **Publication date:** 2021-11-24
- **Effective date:** 2021-12-09
- **FAA docket:** Docket No. FAA-2021-1009
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model EC130T2 helicopters. This AD was prompted by a report of degradation of the rear transmission shaft bearing support and the determination that all of the attachment rivets of the transmission shaft bearing support were sheared. This AD requires repetitive visual inspections of the rivets on the rear transmission shaft bearing support and of the local structure for cracking and missing, loose, or sheared rivets and accomplishment of applicable corrective actions, 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/2021/11/24/2021-25635/airworthiness-directives-airbus-helicopters)
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