{"id":"F2006B08584","name":"AD/CL-600/24 - Generator and APU Feeder Wires","slug":"ad-cl-600-24-generator-and-apu-feeder-wires","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51436,"registerId":"commonwealth-F2006B08584-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CL-600/24 - Generator and APU Feeder Wires","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBombardier (Canadair) CL-600 (Challenger) Series Aeroplanes\n\nAD/CL-600/24 Generator and APU Feeder Wires 12/92\n\nApplicability: All Model CL-600-1A11 and CL-600-2A12 aircraft.\n\nRequirement: 1. Inspect the installation of the Generator 1, Generator 2 and APU No 8 feeder wires for conformance with Canadair Drawings 600-5801 Note 17 or 600-58031 Note 14, and CL-600 Completion Centre Handbook section 6.\n\n    2. If any Generator 1, Generator 2 or APU No 8 feeder wires are not installed in accordance with the above requirements, either:\n\n    (a) Re-route wires or modify interior installation to provide adequate air space surrounding the wires; or\n\n    (b) Install appropriate larger gauge wires of an acceptable type to ensure that the maximum generator rated load can be conducted without causing wire overheat.\n\nNote: Transport Canada AD CF-82-12R1 dated 28 August 1992 refers.\n\nCompliance: Prior to 24 December 1992.\n\nBackground: The generator and APU feeder wires are rated for 200C maximum operating temperature. CL-600 type approval tests have shown that when the wires are installed in accordance with the Canadair requirements, wire temperatures of up to 160C can be reached during maximum generator load conditions.\n\nIf the Canadair requirements are not complied with when installing interior insulation and furnishing, the No 8 feeder wires for the generators and the APU may overheat during high generator load conditions, due to inadequate airspace surrounding the wires. This overheating may result in degraded wire insulation and damage to insulation blankets, cabin furnishing, or other materials adjacent to the wires.\n\nCompliance with this Directive will ensure that there is an adequate air space around the feeder wires, thus preventing damage to the aircraft. The Transport Canada compliance date is extended by approximately two months for Australian registered aircraft.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive maintains the original safety focus—ensuring adequate airspace or higher-capacity wiring for generator/APU feeder wires on CL-600-1A11 and CL-600-2A12 aircraft. It does not broaden applicability beyond those models or introduce continuing new obligations beyond the inspection and required corrective actions by the stated compliance date."},"complexity_factors":["Technical wiring specifications referenced by drawing numbers (Canadair Drawings 600-5801 Note 17; 600-58031 Note 14) and Completion Centre Handbook—requires access to and interpretation of those drawings.","Dual corrective options (re-route/modify installation OR install larger-gauge wires) create operator choice and require technical judgement about adequacy.","Thermal limits and test data: wire max rating 200°C and observed 160°C under max load—necessitates understanding of thermal performance under operating conditions.","Compliance deadline imposes a short implementation window (prior to 24 December 1992), affecting maintenance scheduling and downtime.","Applicability limited to specific airframe models but impacts all operators of those models—affects fleet-level planning and parts/labour costs.","Safety-critical work on electrical systems requires certified personnel and possibly approvals for changes to interior insulation/furnishing placements."],"plain_english_summary":"This airworthiness directive requires operators of Bombardier CL-600-1A11 and CL-600-2A12 aeroplanes to inspect the Generator 1, Generator 2 and APU No 8 feeder wire installations against specified Canadair drawings and the CL-600 Completion Centre Handbook, and—by 24 December 1992—either re-route/modify installations to provide adequate airspace or fit larger-gauge approved wires so the generator load cannot overheat them. It matters because insufficient airspace can let feeder wires run hot enough to degrade insulation and damage adjacent materials."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original, narrow scope. It addresses a specific wiring installation safety issue in specific Bombardier aircraft models. There is no evidence of scope creep; the directive remains tightly focused on the generator and APU feeder wire overheating risk identified in the original Canadian airworthiness directive."},"complexity_factors":["Single, specific aircraft type and model applicability (CL-600-1A11 and CL-600-2A12 only)","Straightforward two-step requirement: inspect, then remediate if non-compliant","Only two remediation options provided (re-route/modify OR upgrade wire gauge)","Minimal defined terms — only technical references to manufacturer drawings and handbook sections","No nested exceptions or conditional logic beyond the simple 'if non-compliant, then do (a) or (b)' structure","Short document (approximately 250 words) with clear, sequential numbering","Single cross-reference to Canadian Transport Canada AD CF-82-12R1 for background context only"],"plain_english_summary":"This CASA Airworthiness Directive targets Bombardier Challenger CL-600 series aircraft and requires inspection and corrective action on the main generator and APU feeder power cables. It responds to a risk that crowded or incorrectly installed interior fittings can allow these cables to overheat, damage insulation, and ignite nearby materials. Australian-registered CL-600 operators and maintainers must restore proper cable clearances or fit higher-capacity wiring to prevent in‑flight fires or electrical failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires","history":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires/history","analysis":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires/analysis","conflicts":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires/conflicts","importantCases":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires/important-cases","documents":"/api/acts/ad-cl-600-24-generator-and-apu-feeder-wires/documents"}}