{"id":"F2009L02329","name":"AD/PT6A/26 - Power Turbine Containment Ring - CANCELLED","slug":"ad-pt6a-26-power-turbine-containment-ring-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":79094,"registerId":"commonwealth-F2009L02329-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pratt and Whitney Canada Turbine Engines","sectionType":"division","heading":"Pratt and Whitney Canada Turbine Engines - PT6A Series","content":"### Pratt and Whitney Canada Turbine Engines - PT6A Series\n\n| AD/PT6A/26 | Power Turbine Containment Ring | 7/2009 |\n| ---------- | ------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                               |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 2 July 2009.                                                                                                                     |\n| Background:  | This unique Australian AD specified action in accordance with PWC SB No. 12076 or SB No. 1427 no later than December 1996. The AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n18 May 2009","sortOrder":0},{"sectionNumber":"AD/PT6A/26","sectionType":"part","heading":"AD/PT6A/26","content":"## AD/PT6A/26","sortOrder":1},{"sectionNumber":"Power Turbine Containment Ring","sectionType":"part","heading":"Power Turbine Containment Ring","content":"## Power Turbine Containment Ring","sortOrder":2},{"sectionNumber":"7/2009","sectionType":"part","heading":"7/2009","content":"## 7/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1756},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument narrows the regulatory burden by terminating a previously imposed requirement. It does not expand the scope beyond the original purpose of engine safety regulation; rather, it removes the mandatory status of specific maintenance actions for PT6A series power turbine containment rings."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references","Extremely short (under 100 words of substantive content)"],"plain_english_summary":"This document officially cancels a previous aircraft safety rule (Airworthiness Directive AD/PT6A/26) that required owners of Pratt & Whitney Canada PT6A series engines to perform specific maintenance on **power turbine containment rings** by December 1996.\n\n**What this means:**\n*   As of **2 July 2009**, aircraft operators no longer need to follow the requirements in **Service Bulletins No. 12076 or No. 1427** (these were technical instructions issued by the manufacturer).\n*   The original safety requirement is completely removed.\n*   Owners and operators of these engines are no longer legally required to perform the inspections or replacements mandated by the original directive.\n\nIn short, this is a clean-up measure that removes an outdated maintenance requirement, reducing red tape for aircraft operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled","history":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled/history","analysis":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled/analysis","conflicts":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled/conflicts","importantCases":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled/important-cases","documents":"/api/acts/ad-pt6a-26-power-turbine-containment-ring-cancelled/documents"}}