# Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters
> **Rule** · Final rule. · Published 2016-12-27 · Effective 2017-01-31 · 81 FR 94946
## Document
- **Document number:** 2016-30285
- **Category:** airworthiness
- **Manufacturer:** AgustaWestland S.p.A. (Agusta)
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 94946
- **Publication date:** 2016-12-27
- **Effective date:** 2017-01-31
- **FAA docket:** Docket No. FAA-2016-4278
## Abstract

We are adopting a new airworthiness directive (AD) for certain Agusta Model AB139 and AW139 helicopters. This AD requires performing operational checks of both hydraulic systems. This AD was prompted by an assessment of the hydraulic systems of the helicopter following an accident. These actions are intended to prevent the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/12/27/2016-30285/airworthiness-directives-agustawestland-spa-agusta-helicopters)
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