# Airworthiness Directives; AGUSTA S.p.A. Helicopters
> **Rule** · Final rule; request for comments. · Published 2012-06-18 · Effective 2012-07-03 · 77 FR 36137
## Document
- **Document number:** 2012-14385
- **Category:** airworthiness
- **Manufacturer:** AGUSTA S.p.A.
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 77 FR 36137
- **Publication date:** 2012-06-18
- **Effective date:** 2012-07-03
- **FAA docket:** Docket No. FAA-2012-0600
## Abstract

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AW139 helicopters to determine if the hardware that attaches the upper end of collective control rod C2 to torque tube C3 is properly installed. This AD is prompted by the discovery of an incorrectly-attached collective control rod. These actions are intended to prevent separation of the collective control rod from the torque tube, loss of control of the collective pitch, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/06/18/2012-14385/airworthiness-directives-agusta-spa-helicopters)
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