# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule; request for comments. · Published 2023-04-25 · Effective 2023-05-10 · 88 FR 24899
## Document
- **Document number:** 2023-08629
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 88 FR 24899
- **Publication date:** 2023-04-25
- **Effective date:** 2023-05-10
- **FAA docket:** Docket No. FAA-2023-0665
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model AB412 and AB412 EP helicopters. This AD was prompted by a report of a fatigue crack in a left-hand (LH) fin spar cap. This AD requires cleaning and repetitively inspecting certain part-numbered LH fin spar caps, and repetitively inspecting the exterior of the fin skin and, depending on the results, accomplishing corrective action. This AD also prohibits certain corrective actions as a terminating action for the repetitive inspections unless the corrective actions have been approved as a terminating action, 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/2023/04/25/2023-08629/airworthiness-directives-leonardo-spa-helicopters)
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