COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell UH-1 Series Helicopters 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 39.1 (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/UH-1/11 Pillow Block Bolts and Hardware 8/2000 Applicability: Models UH1B, UH1F, and UH1H. Requirement: Action in accordance with the technical requirements of FAA AD 92-23-01. Compliance: Before further flight after the effective date of this directive, thereafter at each: * each hub assembly, * overhaul, * change of a MR hub retention strap, or * whenever the bolts are removed for any reason. This Airworthiness Directive becomes effective on 10 August 2000. Background: This directive follows the detection of cracks in the pillow block bolts on Model 205 and 212 helicopters. Failure of all four bolts will permit main rotor separation. 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.