{"id":"F2006B08582","name":"AD/CL-600/22 - Engine Fire Detection, Indication and Extinguishing Systems","slug":"ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51428,"registerId":"commonwealth-F2006B08582-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CL-600/22 - Engine Fire Detection, Indication and Extinguishing Systems","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes\n\n \n\n# AD/CL-600/22 Engine Fire Detection, Indication and Extinguishing Systems\n\nApplicability: CL-600-1A11 - all serial numbers;\n\n \n\nCL-600-2A12 - all serial numbers;\n\n \n\nCL-600-2B16 - serial numbers 5001 to 5049 inclusive.\n\n \n\nRequirement: For CL-600-1A11 aircraft;\n\n \n\n1. Carry out an engine fire extinguishing system check in accordance with paragraph 2.A of Canadair Service Bulletin A600-0581.\n\n\n# 11/91\n\nDM\n\n \n\n2.   Modify the engine fire extinguishing system wiring harnesses and perform a functional test in accordance with paragraphs 2.B and 2.C of Canadair service bulletin A600-0581.\n\n \n\nFor CL-600-2A12 and applicable CL-600-2B16;\n\n \n\n3.   Perform an engine fire extinguishing system check and an engine fire detection and warning system check in accordance with paragraph 2.A of Canadair Service Bulletin A601-0309.\n\n \n\n4.   Modify the engine the engine fire extinguishing system wiring harnesses and perform a functional test in accordance with paragraphs 2.B and 2.C of Canadair service bulletin A601-0309.\n\n \n\nNote: Transport Canada Airworthiness Directive CF-91-24 also refers.\n\n \n\nCompliance: Requirements 1 and 3, prior to 30 August 1991.\n\n \n\nRequirements 2 and 4, prior to 28 February 1992 or on the next occasion the fire bottles are removed from the aircraft, whichever occurs first.\n\n \n\nBackground: The possibility exists that disconnection and subsequent reconnection of the engine fire extinguishing wiring harness, and the engine fire detecting and extinguishing harness on the affected aircraft may lead to possible cross connections of these harnesses. This could result in a fire bottle being discharged into the wrong engine, or failure of the fire warning system to annunciate a warning in the event of an engine fire.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD text sets requirements for the listed CL‑600 models/serials and specifies actions and deadlines; it does not indicate any amendment or change to scope within this document."},"complexity_factors":["Multiple aircraft models and serial‑number ranges are covered (CL‑600‑1A11; CL‑600‑2A12; CL‑600‑2B16 s/n 5001–5049), increasing tracking and applicability tasks.","Work is specified by manufacturer service bulletins (A600‑0581, A601‑0309), requiring access to and reliance on external technical documents.","Two distinct sequences: initial system checks (shorter deadline) and wiring‑harness modifications plus functional tests (later deadline or tied to fire bottle removal), which complicates maintenance scheduling.","Safety‑critical electrical wiring modifications and functional testing impose procedural and competence requirements on maintenance organisations.","Compliance timing tied to an operational event (fire bottle removal) creates conditional compliance planning and potential operational disruption.","Potential coordination with foreign authority action (note referring to Transport Canada AD CF‑91‑24) adds regulatory cross‑reference complexity."],"plain_english_summary":"AD requires inspection and wiring modifications to the engine fire detection, indication and extinguishing systems on specified Bombardier CL‑600 variants. Operators must perform system checks and modify wiring harnesses and carry out functional tests per Canadair Service Bulletins A600‑0581 or A601‑0309. The Civil Aviation Safety Authority requires checks by 30 Aug 1991 and wiring modifications by 28 Feb 1992 or when fire bottles are next removed. Operators pay and schedule the work. The AD says this prevents wiring cross‑connections that could misdirect a fire bottle or suppress a warning."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific wiring defect in specific aircraft models. It has not expanded beyond its original purpose of mandating fire system inspections and modifications."},"complexity_factors":["Very short document (approximately 250 words)","Only 4 substantive requirements, clearly numbered","Minimal defined terms (only aircraft model designations)","No cross-references to other legislation or regulations beyond a single reference to a Canadian Transport Canada directive","Simple conditional logic (two compliance deadlines based on aircraft type and maintenance events)","Straightforward applicability section using serial number ranges"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections and wiring-harness modifications on Bombardier Challenger CL-600 series business jets to prevent accidental cross-connection of engine fire detection and extinguishing systems. It affects CL-600-1A11, CL-600-2A12 (all serials) and CL-600-2B16 (S/N 5001–5049). Required checks are due by 30 Aug 1991, with permanent harness changes and tests by 28 Feb 1992 (or at next bottle removal). The fixes prevent misdirected discharge or missed warnings that could lead to catastrophic engine fires."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems","history":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems/history","analysis":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems/analysis","conflicts":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems/conflicts","importantCases":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems/important-cases","documents":"/api/acts/ad-cl-600-22-engine-fire-detection-indication-and-extinguishing-systems/documents"}}