{"id":"F2006B04651","name":"AD/BELL 412/17 - AM-SAFE Harness Buckle Assemblies","slug":"ad-bell-412-17-am-safe-harness-buckle-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44403,"registerId":"commonwealth-F2006B04651-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 412/17 - AM-SAFE Harness Buckle Assemblies","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBell Helicopter Textron 412 Series Helicopters\n\nAD/BELL 412/17 AM-SAFE Harness Buckle Assemblies 4/87\n\nApplicability: All model 412 with S/No. 33001 to 33134 equipped with:\n\na. AEK \\- Passenger Seats \\- Thirteen P/N 412-706-002-101/-103\n\nb. AEK \\- Litter P/N 412-706-006-101/-103\n\nc. AEK \\- 412 CAA VFR Certification P/N 412-705-016-101/-103/-105\n\nRequirement: Action in accordance with Bell Alert SB 412-87-28.\n\nCompliance: Prior to the issue of the next Maintenance Release after 9 April 1987 or within 100 hours time in service after 9 April 1987 whichever is the later.\n\nBackground: For a particular batch of components there is a possibility that a connector may become dislodged from the buckle if a side load is placed on the assembly. This Directive also satisfies the Requirement of AD/RES/19.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1879},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope as a targeted safety measure addressing defective harness buckles. The reference to satisfying AD/RES/19 indicates administrative consolidation with a related directive rather than scope expansion beyond the original safety purpose."},"complexity_factors":["Aviation industry terminology requiring technical familiarity (e.g., 'Maintenance Release', 'time in service', 'AEK')","Cross-reference to external technical document (Bell Alert Service Bulletin 412-87-28) which contains the actual procedural steps","Specific applicability criteria requiring verification against aircraft records (serial numbers 33001-33134 and specific installed part numbers)"],"plain_english_summary":"This Airworthiness Directive requires owners of Bell 412 helicopters (serials 33001–33134) equipped with certain passenger, stretcher, or certification kits to inspect and, if needed, replace AM-SAFE harness buckles that can release under sideways load. \n\nWork must follow Bell Alert Service Bulletin 412-87-28 and be completed by the aircraft’s next Maintenance Release after 9 April 1987 or within 100 flight hours, whichever is later. The defect could let occupants detach from their harnesses in turbulence or an accident."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies","history":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies/history","analysis":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies/analysis","conflicts":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies/conflicts","importantCases":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies/important-cases","documents":"/api/acts/ad-bell-412-17-am-safe-harness-buckle-assemblies/documents"}}