{"id":"F2006B08629","name":"AD/CL-600/9 - Junction Box No.2 - Vertical Navigation and Glide Slope Relay - Modification","slug":"ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51612,"registerId":"commonwealth-F2006B08629-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CL-600/9 - Junction Box No.2 - Vertical Navigation and Glide Slope Relay - Modification","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-600/9 Junction Box No.2 - Vertical Navigation\n\nand Glide Slope Relay - Modification\n\nApplicability: All model CL600 aeroplanes listed in requirement document. Document: Canadair Challenger SB No. 600-0211.\n\nCompliance: Before issue of Australian Certificate of Airworthiness.\n\n# 3/83\n\n \n\nBackground: To rectify the inverse command signals received from relay kifa when vertical navigation mode is selected.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1630},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive retains its original narrow technical scope addressing a specific avionics wiring defect in CL-600 aircraft. It has not expanded beyond the original purpose of correcting the inverse relay signal issue."},"complexity_factors":["Single, specific technical requirement with no exceptions or conditional logic","Only one external reference (Canadair Service Bulletin 600-0211)","No defined terms or interpretation section","Clear, unambiguous applicability limited to specific aircraft model","Straightforward compliance trigger (pre-Certificate of Airworthiness)"],"plain_english_summary":"This AD mandates a mandatory modification to Junction Box No. 2 on Bombardier Challenger 600 series (CL-600) jets to correct a relay that can send inverted VNAV commands. It applies to all owners/operators covered by Service Bulletin No. 600-0211 and must be completed before an Australian Certificate of Airworthiness is issued or maintained. The fix prevents potentially hazardous climb/descent reversals during instrument approaches."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification","history":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification/history","analysis":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification/analysis","conflicts":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification/conflicts","importantCases":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification/important-cases","documents":"/api/acts/ad-cl-600-9-junction-box-no-2-vertical-navigation-and-glide-slope-relay-modification/documents"}}