# Proposed AD FAA-2014-0070: Bell Helicopter Textron Canada Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2015-05-04
- Products: Bell Helicopter Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 12, 2014, 79 FR 8358
- Comments due: April 14, 2014
- Became: [AD 2015-05-04](https://openairdocs.org/ad/2015-05-04)
- Docket: FAA-2014-0070 (https://www.regulations.gov/docket/FAA-2014-0070, where comments are filed)
- Project: 2011-SW-062-AD
- FR document: 2014-02954
- Official PDF: https://openairdocs.org/files/sha256/88/bc/88bcaa317780a4dfbde9b82d1bff208c7f08899801387abde8163ad728991f83 (from https://www.govinfo.gov/content/pkg/FR-2014-02-12/pdf/2014-02954.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/02/12/2014-02954/airworthiness-directives-bell-helicopter-textron-canada-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/779C0DD5C6F6D5F486257C7D004C49F2.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0070

## Summary

We propose to adopt a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 407 helicopters. This proposed AD would require inspecting the aft fuselage upper skin (upper skin) for a crack and the upper left longeron assembly (longeron assembly) for a crack, corrosion, or defect. This AD would require replacing or repairing a part or section, depending on the inspection's outcome. This proposed AD is prompted by reports of cracks in the upper left-hand longeron. The proposed actions are intended to prevent failure of the longeron assembly or the upper skin, which could lead to a structural failure and loss of helicopter control.

## Notices in this docket

- Feb 12, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-02954, comments due Apr 14, 2014 (https://www.federalregister.gov/documents/2014/02/12/2014-02954/airworthiness-directives-bell-helicopter-textron-canada-helicopters)

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