{"id":"F2009L03412","name":"AD/TPE 331/35 - Second Stage Stator Assembly - CANCELLED","slug":"ad-tpe-331-35-second-stage-stator-assembly-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":140990,"registerId":"commonwealth-F2009L03412-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AlliedSignal (Garrett/AiResearch) Turbin","sectionType":"division","heading":"AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series","content":"### AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series\n\n| AD/TPE 331/35 | Second Stage Stator Assembly | 10/2009 |\n| ------------- | ---------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                        |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 24 September 2009.                                                                                                                                                                                                                        |\n| Background:  | This unique Australian AD specified a once-only radiographic inspection in accordance with Airesearch SB No. A72-0560 at 500 hours after overhaul, or within 200 hours time in service after August 1987, whichever occurred later. The AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n14 August 2009","sortOrder":0},{"sectionNumber":"AD/TPE 331/35","sectionType":"part","heading":"AD/TPE 331/35","content":"## AD/TPE 331/35","sortOrder":1},{"sectionNumber":"Second Stage Stator Assembly","sectionType":"part","heading":"Second Stage Stator Assembly","content":"## Second Stage Stator Assembly","sortOrder":2},{"sectionNumber":"10/2009","sectionType":"part","heading":"10/2009","content":"## 10/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2101},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the legislation entirely rather than expanding it. The Airworthiness Directive is cancelled, removing the inspection requirement completely rather than adding new obligations or broadening coverage beyond the original engine parts."},"complexity_factors":["Single sentence of operative text (the cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Background section is purely explanatory with no legal effect"],"plain_english_summary":"This document **cancels** a previous aviation safety rule (an Airworthiness Directive) that applied to specific aircraft turbine engines.\n\n**What the old rule required**\nThe previous directive (AD/TPE 331/35) forced owners of AlliedSignal (Garrett/AiResearch) TPE 331 series engines to carry out a one-off X‑ray inspection (radiographic inspection) of the *second stage stator assembly* — an internal engine component. The inspection had to happen either 500 hours after the engine was overhauled, or within 200 hours of flying time after August 1987, whichever occurred later.\n\n**What this document does**\nAs of **24 September 2009**, the safety rule is completely cancelled. Operators and owners of these engines **no longer need to perform this specific inspection**.\n\n**Why it matters**\nThis removes a maintenance obligation for aircraft operators, ending the monitoring requirement for that particular engine part."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled","history":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled/history","analysis":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled/analysis","conflicts":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled/conflicts","importantCases":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled/important-cases","documents":"/api/acts/ad-tpe-331-35-second-stage-stator-assembly-cancelled/documents"}}