# Proposed AD FAA-2013-0119: Eurocopter France Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-16-03
- Products: Eurocopter France
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 11, 2013, 78 FR 9634
- Comments due: April 12, 2013
- Became: [AD 2013-16-03](https://openairdocs.org/ad/2013-16-03)
- Docket: FAA-2013-0119 (https://www.regulations.gov/docket/FAA-2013-0119, where comments are filed)
- Project: 2011-SW-034-AD
- FR document: 2013-02989
- Official PDF: https://openairdocs.org/files/sha256/50/e9/50e92d4a84b56f0d6b8657671aa87af6fbba325f3b99b9a3fdaaf39abb71c644 (from https://www.govinfo.gov/content/pkg/FR-2013-02-11/pdf/2013-02989.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/02/11/2013-02989/airworthiness-directives-eurocopter-france-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/935E80D65866F8E086257B0F004E8BB3.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0119

## Summary

We propose to adopt a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS350 and AS355 helicopters, to require inspecting for a crack in the control lever attachment yokes, and if needed, replacing the tail rotor gearbox (TGB). This proposed AD is prompted by improper casting of TGB casing assemblies, which may lead to cracking. A crack in the control lever attachment yokes could cause a loss of tail rotor pitch control, and consequently, loss of control of the helicopter.

## Notices in this docket

- Feb 11, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-02989, comments due Apr 12, 2013 (https://www.federalregister.gov/documents/2013/02/11/2013-02989/airworthiness-directives-eurocopter-france-helicopters)

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