{"id":"F2006B04495","name":"AD/BELL 206/4 - Control Tubes - Inspection","slug":"ad-bell-206-4-control-tubes-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114189,"registerId":"commonwealth-F2006B04495-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/4 - Control Tubes - Inspection","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)  Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n \n\nAD/BELL 206/4 Control Tubes - Inspection 6/68\n\nApplicability: All model 206A with S/Nos. 4, 6 to 10, 12 to 20, 22 to 59, 61 to 79, 81 to 83, 85 to\n\n91, 93, 94, 96, 97, 99, 100, and 102.\n\n \n\nDocument: Bell SB No. 206A-6.\n\n \n\nCompliance: Within 100 hours time in service after 13 June 1968.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1809},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope targeting specific Bell 206A helicopter serial numbers for a one-time control tube inspection. No expansion of applicability or additional requirements have been added."},"complexity_factors":["Narrow applicability limited to 67 specific aircraft serial numbers","Single compliance action (inspection) required","Minimal cross-referencing (only one external service bulletin)","Clear deadline with no conditional exceptions or nested definitions"],"plain_english_summary":"**What this requires**\nThis Airworthiness Directive (a mandatory safety notice) orders owners and operators of specific Bell 206A helicopters to inspect the aircraft's control tubes.\n\n**Who it affects**\nOnly applies to Bell 206A helicopters with specific serial numbers listed in the document (including serial numbers 4, 6–10, 12–20, 22–59, 61–79, 81–83, 85–91, 93, 94, 96, 97, 99, 100, and 102).\n\n**What must be done**\n*   Inspect the control tubes following the procedures in **Bell Service Bulletin No. 206A-6**\n*   Complete the inspection within **100 hours of flight time** after 13 June 1968\n\n**Why it matters**\nControl tubes connect the pilot's controls to the helicopter's rotor system. This directive ensures these critical components are checked for defects that could affect flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-4-control-tubes-inspection","history":"/api/acts/ad-bell-206-4-control-tubes-inspection/history","analysis":"/api/acts/ad-bell-206-4-control-tubes-inspection/analysis","conflicts":"/api/acts/ad-bell-206-4-control-tubes-inspection/conflicts","importantCases":"/api/acts/ad-bell-206-4-control-tubes-inspection/important-cases","documents":"/api/acts/ad-bell-206-4-control-tubes-inspection/documents"}}