# Proposed AD 99-SW-84-AD: Bell Helicopter Textron Canada Model 430 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-16-06
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 3, 2000, 65 FR 25694
- Comments due: July 3, 2000
- Became: [AD 2000-16-06](https://openairdocs.org/ad/2000-16-06)
- Docket: 99-SW-84-AD
- FR document: 00-11063
- Official PDF: https://openairdocs.org/files/sha256/c1/6b/c16bbba4a4867a2f2008a60a73aa09d5e58229f43a478949e9deb0e5f651b108 (from https://www.govinfo.gov/content/pkg/FR-2000-05-03/pdf/00-11063.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/05/03/00-11063/airworthiness-directives-bell-helicopter-textron-canada-model-430-helicopters
- Page: https://openairdocs.org/proposed/99-SW-84-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Bell Helicopter Textron Canada (BHTC) Model 430 helicopters. This proposal would require replacing arm clamp screws (screws) in the yaw, roll, pitch, and collective syncro resolvers, and installing a guard bracket on the yaw, roll, pitch, and collective syncro resolvers. This proposal is prompted by an operator's report that a yaw control channel jammed during freedom-of-control checks following maintenance. The actions specified by the proposed AD are intended to prevent a jammed flight control and subsequent loss of control of the helicopter.

## Notices in this docket

- May 3, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-11063, comments due Jul 3, 2000 (https://www.federalregister.gov/documents/2000/05/03/00-11063/airworthiness-directives-bell-helicopter-textron-canada-model-430-helicopters)

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