# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2021-11-05 · Effective 2021-12-10 · 86 FR 61058
## Document
- **Document number:** 2021-24153
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 61058
- **Publication date:** 2021-11-05
- **Effective date:** 2021-12-10
- **FAA docket:** Docket No. FAA-2021-0671
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report of damage (burns) on the tail rotor blades (TRBs). This AD requires an inspection of each TRB for the general condition and any evidence of burns and replacement if necessary, 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/2021/11/05/2021-24153/airworthiness-directives-leonardo-spa-helicopters)
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