# Proposed AD FAA-2007-28688: Bell Helicopter Textron Canada Model 430 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2007-26-10
- Products: Bell Helicopter Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 16, 2007, 72 FR 38797
- Comments due: September 14, 2007
- Became: [AD 2007-26-10](https://openairdocs.org/ad/2007-26-10)
- Docket: FAA-2007-28688 (https://www.regulations.gov/docket/FAA-2007-28688, where comments are filed)
- Project: 2005-SW-21-AD
- FR document: 07-3434
- Official PDF: https://openairdocs.org/files/sha256/20/04/2004fc27771c0c62f8fde698248c6e7d32f1bb6db0fae2f81f4d041e3dc6f1ef (from https://www.govinfo.gov/content/pkg/FR-2007-07-16/pdf/07-3434.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/07/16/07-3434/airworthiness-directives-bell-helicopter-textron-canada-model-430-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/87DE4875C71716668625731A004D39B0.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28688

## Summary

This document proposes adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 430 helicopters. This proposal would require replacing a certain servo actuator-to- actuator support attachment bolt (bolt) with an airworthy bolt. This proposal would also require establishing a retirement life for certain bolts and recording the retirement life on a component history card or equivalent record. This proposal is prompted by further evaluation of certain fatigue-critical parts, resulting in establishing a life limit of 5000 hours for the affected bolts. The actions specified by this proposed AD are intended to prevent fatigue failure of the bolt and subsequent loss of control of the helicopter.

## Notices in this docket

- Jul 16, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document 07-3434, comments due Sep 14, 2007 (https://www.federalregister.gov/documents/2007/07/16/07-3434/airworthiness-directives-bell-helicopter-textron-canada-model-430-helicopters)

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