# Proposed AD FAA-2007-28229: Eurocopter France Model EC130 B4 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-06-22
- Products: Eurocopter France
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 21, 2007, 72 FR 28456
- Comments due: July 20, 2007
- Became: [AD 2008-06-22](https://openairdocs.org/ad/2008-06-22)
- Docket: FAA-2007-28229 (https://www.regulations.gov/docket/FAA-2007-28229, where comments are filed)
- Project: 2006-SW-23-AD
- FR document: E7-9708
- Official PDF: https://openairdocs.org/files/sha256/f0/f8/f0f8f28a0270f56a7ee369f2bc2e35446e95b0bef57515dbd2987264045b066e (from https://www.govinfo.gov/content/pkg/FR-2007-05-21/pdf/E7-9708.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/05/21/E7-9708/airworthiness-directives-eurocopter-france-model-ec130-b4-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5734C316CCE46612862572E200498674.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28229

## Summary

This document proposes adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 130 B4 helicopters, with certain twist grip assemblies installed. This proposal would require inspecting the pilot and co-pilot collective levers for proper bonding between the twist grip drive tubes and the control pinions and if debonding is present, replacing the collective levers before further flight. This proposal is prompted by one incident in which the engine remained at idle speed although the twist grip had been turned to the flight position. The actions specified by this proposed AD are intended to detect debonding between the twist grip drive tubes and the control pinions on the pilot and co-pilot collective levers to prevent loss of cockpit throttle control of the engine, and subsequent loss of control of the helicopter.

## Notices in this docket

- May 21, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-9708, comments due Jul 20, 2007 (https://www.federalregister.gov/documents/2007/05/21/E7-9708/airworthiness-directives-eurocopter-france-model-ec130-b4-helicopters)

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