# Airworthiness Directives; Eurocopter France Helicopters
> **Rule** · Final rule. · Published 2013-09-13 · Effective 2013-10-18 · 78 FR 56599
## Document
- **Document number:** 2013-22170
- **Category:** airworthiness
- **Manufacturer:** Eurocopter France
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 56599
- **Publication date:** 2013-09-13
- **Effective date:** 2013-10-18
- **FAA docket:** Docket No. FAA-2013-0399
## Abstract

We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155B, EC155B1, SA-365N, SA- 365N1, AS-365N2, AS 365 N3, and SA-366G1 helicopters. This AD requires inspecting the collective pitch lever for correct locking and unlocking conditions. This AD was prompted by two separate reports of inadvertent collective pitch lever locking and unlocking. The actions of this AD are intended to detect an incorrectly adjusted collective pitch lever, which could result in loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/09/13/2013-22170/airworthiness-directives-eurocopter-france-helicopters)
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