# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2021-02-25 · Effective 2021-04-01 · 86 FR 11410
## Document
- **Document number:** 2021-03660
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 11410
- **Publication date:** 2021-02-25
- **Effective date:** 2021-04-01
- **FAA docket:** Docket No. FAA-2020-0649
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This AD requires removing certain engine mounting rods from service and prohibits their installation on any helicopter. This AD was prompted by a report of non-conforming engine mounting rods. The actions of this AD are intended to address an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/02/25/2021-03660/airworthiness-directives-leonardo-spa-helicopters)
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