# Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters
> **Rule** · Final rule; request for comments. · Published 2017-12-20 · Effective 2018-01-04 · 82 FR 60295
## Document
- **Document number:** 2017-27268
- **Category:** airworthiness
- **Manufacturer:** The Enstrom Helicopter Corporation
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 60295
- **Publication date:** 2017-12-20
- **Effective date:** 2018-01-04
- **FAA docket:** Docket No. FAA-2017-1191
## Abstract

We are adopting a new airworthiness directive (AD) for the Enstrom Helicopter Corporation (Enstrom) Model F-28, F-28A, F-28C, F- 28C-2, F-28C-2R, F-28F, F-28F-R, TH-28, 280, 280C, 280F, 280FX, 480, and 480B helicopters. This AD requires inspecting certain rod end bearing assemblies. This AD is prompted by an accident. The actions of this AD are intended to prevent an unsafe condition on these helicopters.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/12/20/2017-27268/airworthiness-directives-the-enstrom-helicopter-corporation-helicopters)
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