{"id":"F2006B08614","name":"AD/CL-600/51 - Chafed IDG Cables","slug":"ad-cl-600-51-chafed-idg-cables","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51552,"registerId":"commonwealth-F2006B08614-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)![](image.001.png)AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)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.\n\nBombardier (Canadair) CL-600 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CL-600/51 Chafed IDG Cables 5/2002 DM","sectionType":"part","heading":"AD/CL-600/51 Chafed IDG Cables 5/2002 DM","content":"# AD/CL-600/51 Chafed IDG Cables 5/2002 DM\n\nApplicability: CL-600-2B16 \"Challenger\" aircraft as follows:\n\nCL-600-2B16 (CL-601-3R) serial numbers (S/N) 5135 through 5194 inclusive; and\n\nCL-600-2B16 (CL-604) S/N 5301 through 5481 inclusive.\n\nRequirement: 1. Unless previously accomplished, visually inspect the integrated drive generator (IDG) cables for both left and right engines for chafing and damage between the service pylon connections to the IDG in accordance with the Accomplishment Instructions of the applicable Bombardier Alert Service Bulletin (ASB) below:\n\n    CL-600-2B16 (CL-601-3R) aeroplanes \\- ASB A601-0542 dated 12 January 2001; or\n\n    b. CL-600-2B16 (CL-604) aeroplanes \\- ASB A604-73-002 dated 12 January 2001.\n\n    2. If chafing or damage is detected, repair as follows:\n\n    If the inner core of the cable is not visible and not damaged, install a repair or replace the damaged IDG cable in accordance with ASB A601-0542 or ASB A604-73-002 as applicable.\n\n    b. If the inner core is visible or damaged, replace the damaged IDG cable.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrowly-scoped Airworthiness Directive addressing a specific safety-of-flight issue (chafed IDG cables) on defined aircraft models. The scope remains tightly focused on the original safety concern without expansion into unrelated operational or maintenance areas."},"complexity_factors":["Short, single-purpose directive focused on one specific mechanical issue","Only 2 defined aircraft model categories with clear serial number ranges","Simple conditional structure: inspect → if damage found → repair or replace based on severity","No nested exceptions or complex cross-referencing to other legislation","References external technical documents (Bombardier Service Bulletins) rather than incorporating detailed technical specifications within the text itself","Clear compliance pathway with only two decision branches based on inspection results"],"plain_english_summary":"This CASA Airworthiness Directive requires mandatory inspection and, if needed, repair or replacement of electrical cables to the Integrated Drive Generators on certain Bombardier CL-601-3R and CL-604 serial-numbered aircraft. \n\nIt targets chafed IDG wiring that could expose the inner core and cause electrical failure or fire; operators must follow Bombardier service instructions and cannot legally fly affected jets until compliant."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains limited to Bombardier CL-600-2B16 (CL-601-3R and CL-604) aircraft within the specified serial number ranges and requires inspections and corrective action per the referenced Bombardier Alert Service Bulletins. The AD implements a targeted corrective measure for the identified unsafe condition and does not expand applicability or obligations beyond the stated aircraft and ASB-based procedures."},"complexity_factors":["Narrow applicability to specific serial number ranges (Applicability) — reduces affected fleet size but requires operators to verify individual airframe eligibility.","Clear mandated action with external technical reliance (Requirement 1 referencing ASB A601-0542 or A604-73-002) — operators must obtain and follow the Bombardier Alert Service Bulletin for detailed steps.","Conditional repair criteria (Requirement 2) — outcome depends on a visual judgment (whether the inner core is visible or damaged), creating some discretionary assessment by maintenance personnel.","Compliance burden on operators — inspections and any repairs/replacements are performed and funded by the operator, potentially causing AOG time and parts requirements (Requirement 1–2).","Low regulatory discretion in the AD text — the AD prescribes inspection and repair/replace actions rather than flexible mitigations, simplifying regulator enforcement but constraining operator options."],"plain_english_summary":"**What it does:** Requires operators of specified Bombardier CL-600-2B16 (CL-601-3R and CL-604) serial numbers to visually inspect both left and right integrated drive generator (IDG) cables between the service pylon and the IDG using the applicable Bombardier Alert Service Bulletin. If chafing or damage is found, cables must be repaired or replaced; visible or damaged inner cores must be replaced. \n\nOperators pay for and carry out the inspections and corrective work and must follow the AD timing and the referenced ASB instructions."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-51-chafed-idg-cables","history":"/api/acts/ad-cl-600-51-chafed-idg-cables/history","analysis":"/api/acts/ad-cl-600-51-chafed-idg-cables/analysis","conflicts":"/api/acts/ad-cl-600-51-chafed-idg-cables/conflicts","importantCases":"/api/acts/ad-cl-600-51-chafed-idg-cables/important-cases","documents":"/api/acts/ad-cl-600-51-chafed-idg-cables/documents"}}