{"id":"F2006B04525","name":"AD/BELL 206/71 - Main Rotor Split Cone Set - Inspection","slug":"ad-bell-206-71-main-rotor-split-cone-set-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114234,"registerId":"commonwealth-F2006B04525-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/71 - Main Rotor Split Cone Set - 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\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n \n\nAD/BELL 206/71 Main Rotor Split Cone Set - Inspection 4/76\n\nApplicability: All model 206B with S/Nos. 1464 to 1857, 1860 to 1894, 1899 and 1903. Document:  Bell SB 206-76-2.\n\nCompliance: Before further flight after 5 March 1976.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1635},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains targeted at the specific safety issue of main rotor split cone sets on the identified aircraft models, with no evidence of scope creep beyond the original airworthiness concern."},"complexity_factors":["Single, unambiguous compliance action (inspection only)","Applicability limited to specific aircraft serial number ranges","No defined terms, interpretation clauses, or nested exceptions","Only one external reference (to manufacturer service bulletin)","Absolute compliance deadline with no conditional provisions or alternative methods of compliance stated"],"plain_english_summary":"**What this does:** Requires owners and operators of specific Bell 206B helicopters to inspect the main rotor split cone set — a critical component that helps secure the main rotor blades to the hub — before flying the aircraft after 5 March 1976.\n\n**Who it affects:** Owners and operators of Bell 206B helicopters with serial numbers 1464 to 1857, 1860 to 1894, 1899, and 1903.\n\n**What must be done:** The inspection must be carried out in accordance with Bell Service Bulletin 206-76-2 (the manufacturer's official safety instructions).\n\n**Why it matters:** The main rotor split cone set is essential for keeping the rotor blades attached during flight. This directive prevents catastrophic mechanical failure by ensuring potential defects are identified and rectified before the aircraft flies.\n\n**Compliance deadline:** Before any further flight after 5 March 1976."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection","history":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection/history","analysis":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection/analysis","conflicts":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection/conflicts","importantCases":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection/important-cases","documents":"/api/acts/ad-bell-206-71-main-rotor-split-cone-set-inspection/documents"}}