COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 125 Series Aeroplanes 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/HS 125/162 Turbine Air Discharge Duct 7/2000 Applicability: All model BAe 125 series 1000A, 1000B and model Hawker 1000 series aircraft. Requirement: 1. Perform a general visual inspection of the turbine air discharge duct in accordance with Accomplishment Instructions Part I of Raytheon Service Bulletin SB 21-3108 dated November 1998. 2. Carry out a detailed inspection of the turbine air discharge duct in accordance with Accomplishment Instructions Part II of Raytheon Service Bulletin SB 21-3108 dated November 1998. Note: FAA AD 2000-01-02 Amendment 39-11499 refers. Compliance: 1. Within 25 hours time in service after the effective date of this Directive. 2. Within 300 flight hours or 6 months time in service, whichever occurs first, after the effective date of this Directive. This Airworthiness Directive becomes effective on 13 July 2000. Background: Separation of the cold air discharge duct and/or water separator have occurred and resulted in an in-flight cabin de-pressurisation. Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority 31 May 2000 The above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000.