COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bombardier (Canadair) CL-600 (Challenger) 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/CL-600/40 Electrical Power - Chafing of IDG Cables 3/2001 TX Applicability: Model CL-600-2B19 "Regional Jet" aeroplanes Serial Numbers 7003 through 7462 inclusive. Requirement: 1. Visually inspect the Integrated Drive Generator (IDG) cable harness assembly of both the left and right engines in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin (ASB) A601R-24-103 dated 28 December 2000. 2. If, as a result of the Requirement 1 inspection, chafing or damage is detected repair or replace the cable as follows: 1. inner cores not visible and not damaged - either repair or replace the damaged IDG cable in accordance with ASB A601R-24-103; or b. inner core damaged or visible - replace the damaged IDG cable in accordance with ASB A601R-24-103. 3. Install a protective conduit (Part Number S1244H-6-3 on the right engine and S1244H-6-4 1/2 or S1244H-6-5 on the left engine) on the IDG cable harness assembly in accordance with ASB A601R-24-103. 4. Report any findings of IDG cable chafing or damage to Bombardier at the address identified in ASB A601R-24-103. Note: Transport Canada Emergency AD CF-2001-02 refers. Compliance: For Requirement 1 - Within 50 hours time in service from the effective date of this Directive. For Requirement 2 - Before further flight. For Requirement 3 - Within 550 hours time in service after the effective date of this Directive. For Requirement 4 - Within 30 days of carrying out the Requirement 1 inspection. This Airworthiness Directive becomes effective on 25 January 2001. COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Background: Transport Canada has received a report of electrical arcing between the IDG cable and an engine cowl door due to IDG cable chafing. This condition, if not corrected, could potentially be an ignition source of an in-flight fire and/or result in the in-flight loss of electrical power. This Directive requires an inspection of the IDG cables, installation of a protective conduit and, if necessary, rework or replacement of damaged cables. William Ronald Smith Delegate of the Civil Aviation Safety Authority 23 January 2001 The above AD is notified in the Commonwealth of Australia Gazette on 25 January 2001.