# Airworthiness Directives; Leonardo S.p.a. Helicopters
> **Rule** · Final rule; request for comments. · Published 2020-09-04 · Effective 2020-09-21 · 85 FR 55171
## Document
- **Document number:** 2020-19533
- **Category:** airworthiness
- **Manufacturer:** Leonardo S.p.a.
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 85 FR 55171
- **Publication date:** 2020-09-04
- **Effective date:** 2020-09-21
- **FAA docket:** Docket No. FAA-2020-0784
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2014-12-07 for Agusta S.p.A (Agusta) Model AB412 and AB412EP helicopters. AD 2014- 12-07 requires inspecting the rotor brake pinion (pinion) for a crack and replacing it if there is a crack. This AD retains the requirements of AD 2014-12-07 and also requires removing certain serial-numbered pinions from service. This AD was prompted by a report of an additional cracked pinion. The actions of this AD are intended to address an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/09/04/2020-19533/airworthiness-directives-leonardo-spa-helicopters)
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