COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron 204 Series Helicopters AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BELL 204/4 issues the following AD under subregulation 39.1 (1) of CAR 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. AD/BELL 204/4 Amdt 1 Tail Rotor Assembly Inspection 8/2000 Applicability: Model 204B Series equipped with TR hub and TR Blade assembly P/N 204-011-701- 9 or 204-011-701-15. Requirement: Action in accordance with Bell SB 204B-1. Note: FAA AD 67-06-01 refers. Compliance: 1. Tail rotor blades to be tracked at intervals not exceeding 100 hours time in service after 15 May 1967. 2. Tail Rotor hub and blade assembly are to be balanced at intervals not exceeding 300 hours time in service after 15 May 1967. This Amendment becomes effective on 10 August 2000. Background: This Directive was issued initially to ensure correct track and balance of the tail rotor assembly. Amendment 1 includes the country of manufacture AD for reference. It also follows the re-introduction of the AD Series after sixteen years. David Alan Villiers Delegate of the Civil Aviation Safety Authority 6 July 2000 The above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.