# Proposed AD FAA-2010-1303: Eurocopter France (Eurocopter) Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, and SA-366G1 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-08-17
- Products: Eurocopter France
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 18, 2011, 76 FR 2842
- Comments due: March 21, 2011
- Became: [AD 2013-08-17](https://openairdocs.org/ad/2013-08-17)
- Docket: FAA-2010-1303 (https://www.regulations.gov/docket/FAA-2010-1303, where comments are filed)
- Project: 2010-SW-049-AD
- FR document: 2011-720
- Official PDF: https://openairdocs.org/files/sha256/fc/97/fc975f2c2eeba8fd8c35014e67b0fd5f3106bb15fe5c9475c39b609203fe936a (from https://www.govinfo.gov/content/pkg/FR-2011-01-18/pdf/2011-720.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/01/18/2011-720/airworthiness-directives-eurocopter-france-eurocopter-model-sa-365n-sa-365n1-as-365n2-as-365-n3-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/37241A8D254784CD8625781C004E088E.0001
- Page: https://openairdocs.org/proposed/FAA-2010-1303

## Summary

We propose to adopt a new airworthiness directive (AD) for the specified Eurocopter model helicopters. This proposed AD would require an initial and recurring inspections of the inner angles and flanges of the 9-degree frame on the right-hand (RH) and left-hand (LH) sides for a crack. If a crack is found, this proposed AD would require, before further flight, repairing the frame. This proposed AD is prompted by the discovery of a crack in the 9-degree frame of a Eurocopter Model AS-365N2 helicopter. These cracks could also develop on the other specified model helicopters because they contain the same 9-degree frame. The actions specified by this proposed AD are intended to detect a crack in the 9-degree frame to prevent loss of structural integrity and subsequent loss of control of the helicopter.

## Notices in this docket

- Jan 18, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-720, comments due Mar 21, 2011 (https://www.federalregister.gov/documents/2011/01/18/2011-720/airworthiness-directives-eurocopter-france-eurocopter-model-sa-365n-sa-365n1-as-365n2-as-365-n3-and)

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