CTHIn ForceLegislation
AD/BELL 430/9 - Yaw Synchro Resolver Shaft Control Arm Screw
//
© 2026 Zoe. All rights reserved.
Zoe is a legal information platform. Always consult the Federal Register of Legislation for authoritative text.
AD/BELL 430/9 - Yaw Synchro Resolver Shaft Control Arm Screw
Start here
Turn the raw legal text into a practical explanation grounded in AD/BELL 430/9 - Yaw Synchro Resolver Shaft Control Arm Screw.
| AD/BELL 430/9 | Yaw Synchro Resolver ShaftControl Arm Screw | 12/2006 |
|---|
| Applicability: | Model 430 helicopters, serial numbers 49001 through 49018, 49020 through 49043, and 49045 through 49051. |
|---|---|
| Requirement: | Install screws part number 1352-04-8P and guard brackets in accordance with the Accomplishment Instructions of BHTC Alert Service Bulletin 430-99-11, or later Transport Canada approved revision.Note: Transport Canada AD CF-99-26 refers. |
| Compliance: | Unless already accomplished, before 23 December 2006. |
| This Airworthiness Directive becomes effective on 23 November 2006. | |
| Background: | A yaw control channel malfunctioned during a check for freedom of controls following maintenance. The screw that clamps the control arm to the yaw synchro resolver shaft was loose, allowing the control arm to separate from the shaft and to jam against an airframe stringer. |
Image unavailable in extracted text
David Villiers
Delegate of the Civil Aviation Safety Authority
12 October 2006