{"id":"F2009L03420","name":"AD/TPE 331/16 - Turbine Bearing Oil Inlet Tube - Replacement - CANCELLED","slug":"ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":140999,"registerId":"commonwealth-F2009L03420-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AlliedSignal (Garrett/AiResearch) Turbin","sectionType":"division","heading":"AlliedSignal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 331/16 | Turbine Bearing Oil Inlet Tube - Replacement | 10/2009 |\n| ------------- | -------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                         |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 24 September 2009.                                                                                                                                                         |\n| Background:  | This unique Australian AD specified action in accordance with Airesearch SBNo. 79-0005 before installation in an aircraft following reconditioning after March 1974. 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 331/16","sectionType":"part","heading":"AD/TPE 331/16","content":"## AD/TPE 331/16","sortOrder":1},{"sectionNumber":"Turbine Bearing Oil Inlet Tube - Replace","sectionType":"part","heading":"Turbine Bearing Oil Inlet Tube - Replacement","content":"## Turbine Bearing Oil Inlet Tube - Replacement","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":2515},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs a specific, discrete function: cancelling AD/TPE 331/16. It does not expand, modify, or grow beyond its original purpose of removing the previous directive's requirements."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No substantive regulatory requirements, conditions, or exceptions","No definitions or interpretation sections","No cross-references to other legislation beyond the cancelled directive"],"plain_english_summary":"This document **cancels a previous aviation safety rule** about specific aircraft engines.\n\n**What it does:**\nIt officially scraps a directive that previously required replacement of turbine bearing oil inlet tubes in AlliedSignal (Garrett/AiResearch) TPE 331 series engines when being reconditioned after March 1974.\n\n**Who it affects:**\nOwners, operators, and maintenance providers for aircraft with these engines (often found in regional airliners and agricultural aircraft).\n\n**Why it matters:**\nThe safety requirement is no longer considered necessary, removing compliance costs and paperwork for affected operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled","history":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled/history","analysis":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled/analysis","conflicts":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled/important-cases","documents":"/api/acts/ad-tpe-331-16-turbine-bearing-oil-inlet-tube-replacement-cancelled/documents"}}