# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule. · Published 2021-11-19 · Effective 2021-12-27 · 86 FR 64815
## Document
- **Document number:** 2021-25213
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 64815
- **Publication date:** 2021-11-19
- **Effective date:** 2021-12-27
- **FAA docket:** Docket No. FAA-2021-0687
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AW189 helicopters. This AD was prompted by a report that a number of fairleads that support the engine combustion chamber D1 drain hose showed evidence of heat damage. This AD requires modifying the helicopter by installing a certain engine combustion chamber D1 drain assembly, 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/2021/11/19/2021-25213/airworthiness-directives-leonardo-spa-helicopters)
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