AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section. Bell Helicopter Textron Canada (BHTC) 430 Series Helicopters AD/BELL 430/8 Lateral Control Tube Assembly 11/2006 Applicability: Model 430 helicopters, serial numbers 49001 through 49018, 49020 through 49036, and 49038. Requirement: Replace the lateral control tube assembly part number 430-001-018-101, and rework the fairing assembly part number 430-061-822-101, in accordance with Part 2 of BHTC Alert Service Bulletin 430-98-6, or later Transport Canada approved revision. Note: Transport Canada AD CF-98-29 refers. Compliance: Unless already accomplished, before 26 November 2006. This Airworthiness Directive becomes effective on 26 October 2006. Background: A report was received, that in certain flight conditions the lateral control tube assembly part number 430-001-018-101 may chafe on the inside surface of the forward fairing assembly part number 430-061-822-101. This condition, unless corrected, could result in binding of the lateral control tube assembly. David Villiers Delegate of the Civil Aviation Safety Authority 13 September 2006