# Airworthiness Directives; Eurocopter France (Eurocopter) Helicopters
> **Rule** · Final rule; request for comments. · Published 2013-10-25 · Effective 2013-10-25 · 78 FR 63853
## Document
- **Document number:** 2013-24816
- **Category:** airworthiness
- **Manufacturer:** Eurocopter France (Eurocopter)
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 78 FR 63853
- **Publication date:** 2013-10-25
- **Effective date:** 2013-10-25
- **FAA docket:** Docket No. FAA-2013-0878
## Abstract

We are adopting a new airworthiness directive (AD) for Eurocopter Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. This AD requires certain inspections of each tail rotor pitch horn assembly (pitch horn) for a crack, and if there is a crack, before further flight, replacing the pitch horn with an airworthy pitch horn. This AD is prompted by a report of a crack in the yoke of a pitch horn. These actions are intended to detect a crack in the pitch horn to prevent failure of the pitch horn, loss of the anti-torque function, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/25/2013-24816/airworthiness-directives-eurocopter-france-eurocopter-helicopters)
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