# Airworthiness Directives; Eurocopter France Model EC130 B4 Helicopters
> **Rule** · Final rule; request for comments. · Published 2006-06-12 · Effective 2006-07-27 · 71 FR 33598
## Document
- **Document number:** 06-5241
- **Category:** airworthiness
- **Manufacturer:** Eurocopter France Model EC130 B4
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 33598
- **Publication date:** 2006-06-12
- **Effective date:** 2006-07-27
- **FAA docket:** Docket No. FAA-2006-24807
## Abstract

This amendment adopts a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC130 B4 helicopters. This action requires inspecting the throttle twist grip (twist grip) assembly for any foreign body (chip or debris), any rotating micro-switch, and any micro-switch roller that does not move freely. If any unairworthy condition is found, this action requires that it be corrected before further flight. This amendment is prompted by two reports of a twist grip assembly jamming in the "IDLE" position. The actions specified in this AD are intended to detect and prevent jamming of the twist grip assembly, which, if present, could keep the engine from operating above idle speed and result in subsequent loss of control of the engine power of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/06/12/06-5241/airworthiness-directives-eurocopter-france-model-ec130-b4-helicopters)
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