{"id":"F2009L03791","name":"AD/BELL 206/101 Amdt 1 - Tail Boom to Gearbox Attachment - CANCELLED","slug":"ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":141675,"registerId":"commonwealth-F2009L03791-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron Canada (BHTC) 20","sectionType":"division","heading":"Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters","content":"### Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n| AD/BELL 206/101 Amdt 1 | Tail Boom to Gearbox Attachment | 12/2009 |\n| ---------------------- | ------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                 |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 19 November 2009.                                                                                                                                                                                                                  |\n| Background:  | This unique Australian AD applied to Agusta Bell AB206A and AB206B helicopters and specified action in accordance with Tech Bulletin 206-172 Rev A. Action was required at intervals not exceeding 25 hours time in service. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n28 September 2009","sortOrder":0},{"sectionNumber":"AD/BELL 206/101 Amdt 1","sectionType":"part","heading":"AD/BELL 206/101 Amdt 1","content":"## AD/BELL 206/101 Amdt 1","sortOrder":1},{"sectionNumber":"Tail Boom to Gearbox Attachment","sectionType":"part","heading":"Tail Boom to Gearbox Attachment","content":"## Tail Boom to Gearbox Attachment","sortOrder":2},{"sectionNumber":"12/2009","sectionType":"part","heading":"12/2009","content":"## 12/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1900},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This amendment entirely eliminates the original directive's scope. The original AD imposed recurring mandatory inspections (every 25 hours time in service) for specific helicopter models. Amendment 1 cancels the AD completely, reducing the regulatory burden from active safety mandates to nil."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Extremely brief (under 200 words of substantive text)","Background information provided for context only, not creating legal obligations"],"plain_english_summary":"**What this does**\n\nThis document cancels a previous safety directive for certain helicopters. It permanently removes a requirement that mandated regular inspections of the connection between the tail boom and the gearbox on specific Bell helicopter models.\n\n**Who it affects**\n\nOwners and operators of:\n* Bell Helicopter Textron Canada (BHTC) 206 series helicopters\n* Agusta Bell AB206A and AB206B helicopters\n\n**What changed**\n\nPreviously, operators were legally required to perform specific inspections of the tail boom-to-gearbox attachment every 25 hours of operating time, following instructions in Technical Bulletin 206-172 Rev A. This directive cancels that requirement entirely, meaning those inspections are no longer mandatory as of 19 November 2009."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled","history":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled/history","analysis":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled/analysis","conflicts":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled/conflicts","importantCases":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled/important-cases","documents":"/api/acts/ad-bell-206-101-amdt-1-tail-boom-to-gearbox-attachment-cancelled/documents"}}