{"id":"F2009L04352","name":"AD/BELL 206/172 Amdt 1 - Power Turbine RPM Steady State Operation Avoidance - CANCELLED","slug":"ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":82097,"registerId":"commonwealth-F2009L04352-current","compilationNumber":null,"startDate":"2026-04-02","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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron Canada (BHTC) 20","sectionType":"division","heading":"Bell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 206/172 Amdt 1 | Power Turbine RPM Steady State Operation Avoidance | 24/2009 |\n| ---------------------- | -------------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                      |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 9 December 2009.                                                                                                                                                                                                                                        |\n| Background:  | A State of Design airworthiness directive issued on or after 1st October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by Transport Canada ADCF-2007-13R2 issued 10 November 2009. |\n\n![](image.001.png)\n\nWilliam David  \nDelegate of the Civil Aviation Safety Authority\n\n25 November 2009","sortOrder":0},{"sectionNumber":"AD/BELL 206/172 Amdt 1","sectionType":"part","heading":"AD/BELL 206/172 Amdt 1","content":"## AD/BELL 206/172 Amdt 1","sortOrder":1},{"sectionNumber":"Power Turbine RPM Steady State Operation","sectionType":"part","heading":"Power Turbine RPM Steady State Operation Avoidance","content":"## Power Turbine RPM Steady State Operation Avoidance","sortOrder":2},{"sectionNumber":"24/2009","sectionType":"part","heading":"24/2009","content":"## 24/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2839},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This amendment does not expand the scope of the legislation. Instead, it eliminates the airworthiness directive entirely, reducing the scope of Australian-specific requirements to zero. The cancellation represents a transfer of regulatory responsibility to the State of Design authority under CASR Part 39."},"complexity_factors":["Single operative provision cancelling previous requirements","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-referencing limited to one external Canadian regulation"],"plain_english_summary":"This instrument cancels an Australian airworthiness directive that restricted certain steady-state power turbine RPMs on Bell 206/Agusta Bell 206 helicopters. Affected owners and operators must now comply with the equivalent Transport Canada directive (ADCF-2007-13R2), because under CASR Part 39 State-of-Design directives apply in Australia. The change removes a duplicate local requirement and simplifies regulatory compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled","history":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled/history","analysis":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled/analysis","conflicts":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled/conflicts","importantCases":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled/important-cases","documents":"/api/acts/ad-bell-206-172-amdt-1-power-turbine-rpm-steady-state-operation-avoidance-cancelled/documents"}}