{"id":"F2009L03048","name":"AD/DAUPHIN/25 - MGB Support Bar Shackle - CANCELLED","slug":"ad-dauphin-25-mgb-support-bar-shackle-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80644,"registerId":"commonwealth-F2009L03048-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter SA 360 and SA 365 (Dauphin) S","sectionType":"division","heading":"Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters","content":"### Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters\n\n| AD/DAUPHIN/25 | MGB Support Bar Shackle | 9/2009 |\n| ------------- | ----------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                          |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 27 August 2009.                                                                                                                             |\n| Background:  | This unique Australian AD specified action in accordance with Service TelexNo. 01-27 within 10 hours time in service after July 1990. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n15 July 2009","sortOrder":0},{"sectionNumber":"AD/DAUPHIN/25","sectionType":"part","heading":"AD/DAUPHIN/25","content":"## AD/DAUPHIN/25","sortOrder":1},{"sectionNumber":"MGB Support Bar Shackle","sectionType":"part","heading":"MGB Support Bar Shackle","content":"## MGB Support Bar Shackle","sortOrder":2},{"sectionNumber":"9/2009","sectionType":"part","heading":"9/2009","content":"## 9/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3012},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates an existing regulatory requirement entirely rather than expanding or modifying the scope of the original legislation. It removes compliance obligations for the specified aircraft part."},"complexity_factors":["Single, unambiguous operative provision (cancellation)","No defined terms or interpretation section","No cross-references to other legislation","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"This instrument **cancels a previous aviation safety rule** that applied to Eurocopter SA 360 and SA 365 (Dauphin) series helicopters.\n\n**What it cancelled:**\nA previous directive required operators to take action regarding the **Main Gearbox (MGB) Support Bar Shackle** — a structural component connecting the gearbox to the airframe — in accordance with Service Telex No. 01-27. This previously mandated inspection or replacement within 10 hours of flight time after July 1990.\n\n**What this means:**\nFrom 27 August 2009, owners and operators were **no longer legally required** to perform that specific maintenance action. The cancellation indicates the safety risk addressed by the original rule was resolved or is now managed by other means.\n\n**Who is affected:**\nOwners, operators, and maintenance organisations working on the specified Dauphin helicopter models."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled","history":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled/history","analysis":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled/analysis","conflicts":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled/conflicts","importantCases":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled/important-cases","documents":"/api/acts/ad-dauphin-25-mgb-support-bar-shackle-cancelled/documents"}}