{"id":"F2006B08605","name":"AD/CL-600/43 - Cargo Compartment Smoke Detector","slug":"ad-cl-600-43-cargo-compartment-smoke-detector","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51514,"registerId":"commonwealth-F2006B08605-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor 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.","sortOrder":0},{"sectionNumber":"AD/CL-600/43 Cargo Compartment Smoke Det","sectionType":"part","heading":"AD/CL-600/43 Cargo Compartment Smoke Detector 9/2001","content":"# AD/CL-600/43 Cargo Compartment Smoke Detector 9/2001\n\nApplicability: Model CL-600-2B19 “Regional Jet” aeroplanes, serial numbers 7003 through 7480 inclusive.\n\nRequirement: Replace the cargo compartment smoke detectors Part Number (P/N) 473052 with new smoke detectors P/N 473597-19 in accordance with Bombardier Service Bulletin 601R-26-016 dated 23 March 2001 or Revision A dated 15 June 2001.\n\nNote: Transport Canada AD CF-2001-21 refers.\n\nCompliance: Within 15 months after the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 6 September 2001.\n\nBackground: Transport Canada has advised that the cargo compartment smoke detectors have proved to be susceptible to dirt, condensation and electromagnetic interference. This has resulted in a significant number of in-flight false “CARGO SMOKE” warning messages being posted on the Engine Indication and Crew Alerting System (EICAS). False smoke warnings undermine the effectiveness of the system to the flight crew.\n\n![Signature of James Coyne Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 23 July 2001\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 15 August 2001.","sortOrder":1}],"analysis":{"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 AD maintains its original narrow scope — addressing a specific defective component on a specific aircraft type. There is no evidence of scope creep; it remains a targeted safety fix for a known hardware fault."},"complexity_factors":["Single, clearly defined applicability (one aircraft model, specific serial number range)","One straightforward requirement (replace part A with part B)","Single compliance deadline (15 months from effective date)","Minimal cross-referencing (only one external service bulletin and one related Canadian AD mentioned)","No nested conditions, exceptions, or defined terms section","Short document (approximately 250 words of substantive text)"],"plain_english_summary":"This AD requires operators of specific Bombardier Regional Jet CL-600-2B19 (serials 7003–7480) to replace cargo-compartment smoke detectors (P/N 473052) with improved units (P/N 473597-19) to stop false \"CARGO SMOKE\" alarms that cause alarm fatigue.  \n\nWork must follow Bombardier Service Bulletin 601R-26-016 (or Rev A) and be completed within 15 months of the AD’s effective date (6 Sep 2001)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive prescribes a targeted equipment replacement for CL-600-2B19 serials 7003–7480, cites Bombardier Service Bulletin 601R-26-016/Rev A and references Transport Canada AD CF-2001-21. It does not expand or narrow the aircraft/part scope beyond those specifications and sets a fixed compliance deadline (15 months)."},"complexity_factors":["Narrow applicability to a single aircraft model and a defined serial-number range (7003–7480) which limits scope.","Single, specific technical action: replace one part number with another (P/N 473052 → P/N 473597-19).","Mandatory compliance timeframe (within 15 months) creates a bounded scheduling requirement.","Dependence on external documents: Bombardier Service Bulletin 601R-26-016 (or Rev A) is normative and must be followed.","Regulatory provenance and enforcement under CAR 1998 via a CASA delegate (administrative discretion limited to issuance).","Practical implementation factors (implied): parts availability, maintenance labour and record-keeping obligations for operators."],"plain_english_summary":"**This directive requires operators of Bombardier CL-600-2B19 (serial numbers 7003–7480) to replace cargo-compartment smoke detectors P/N 473052 with P/N 473597-19 per the Bombardier service bulletin, within 15 months.** CASA issued the mandate because the original detectors produced false “CARGO SMOKE” warnings from dirt, condensation and electromagnetic interference. Operators pay for parts and labour, must follow the service bulletin and record compliance, and enforcement is under CAR 1998."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector","history":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector/history","analysis":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector/analysis","conflicts":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector/conflicts","importantCases":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector/important-cases","documents":"/api/acts/ad-cl-600-43-cargo-compartment-smoke-detector/documents"}}