{"id":"F2006B04564","name":"AD/BELL 212/32 - Elevator to Horn Assembly Attachment - Modification","slug":"ad-bell-212-32-elevator-to-horn-assembly-attachment-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114294,"registerId":"commonwealth-F2006B04564-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/32 - Elevator to Horn Assembly Attachment - 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)  Bell Helicopter Textron 212 Series Helicopters\n\n \n\nAD/BELL 212/32 Elevator to Horn Assembly Attachment - Modification\n\n\n1/85\n\n \n\nApplicability: All model 212 helicopters S/N 30501 to 30999, 31101 to 31256, and 32101 to 32142 which do not have elevator horn P/N 205-001-914-103 and elevators P/N 205-030- 856- 121/-123 installed.\n\n \n\nRequirement: Bell Alert S.B. No. 212-84-36.\n\n \n\nCompliance: Unless already accomplished, before 01 March 1985 or prior to the issue of the next Maintenance Release after 31 January 1985, whichever is the later.\n\n \n\nBackground: Several reports have been received of bolt lugs cracking on elevator spar fittings and horn assemblies. Loss of an elevator in flight could result in airframe or tail rotor damage.\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":1382},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope addressing a specific mechanical defect in defined helicopter models. No expansion beyond the original safety purpose is evident."},"complexity_factors":["Specific serial number ranges and part number exclusions in the applicability clause","Single external technical reference (Bell Service Bulletin 212-84-36) containing the actual modification instructions","Dual-date compliance formula with 'whichever is the later' condition"],"plain_english_summary":"This Airworthiness Directive mandates a specific mechanical modification for certain Bell 212 helicopters after repeated cracking of the bolts joining the elevator to its horn—failures that can detach the elevator and risk fuselage or tail-rotor strikes and a crash. It applies to listed serial-numbered helicopters unless already fitted with the upgraded elevator and horn parts, and requires compliance with Bell Alert Service Bulletin 212-84-36 by the stated maintenance-date deadlines."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification","history":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification/history","analysis":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification/analysis","conflicts":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification/conflicts","importantCases":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification/important-cases","documents":"/api/acts/ad-bell-212-32-elevator-to-horn-assembly-attachment-modification/documents"}}