# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2025-04-18 · Effective 2025-05-23 · 90 FR 16456
## Document
- **Document number:** 2025-06711
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 16456
- **Publication date:** 2025-04-18
- **Effective date:** 2025-05-23
- **FAA docket:** Docket No. FAA-2024-2425
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model A109C, A109E, A109S, and AW109SP helicopters. This AD was prompted by a report of a quality escape on a batch of main rotor blades (MRBs). This AD requires repetitively tap inspecting certain MRBs and replacing those MRBs. This AD also prohibits installing those MRBs, 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/2025/04/18/2025-06711/airworthiness-directives-leonardo-spa-helicopters)
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