{"id":"F2008L04088","name":"AD/PA-25/19 - Engine Mount - Inspection - CANCELLED","slug":"ad-pa-25-19-engine-mount-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75974,"registerId":"commonwealth-F2008L04088-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-25 (Pawnee) Series Aeroplanes","sectionType":"division","heading":"Piper PA-25 (Pawnee) Series Aeroplanes","content":"### Piper PA-25 (Pawnee) Series Aeroplanes\n\n| AD/PA-25/19 | Engine Mount - Inspection | 12/2008 |\n| ----------- | ------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                   |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 20 November 2008.                                                                                                                                                                                                                    |\n| Background:  | This unique Australian AD specified dye-penetrant inspection of engine mounts at intervals not exceeding 250 hours time in service. This AD was not based on a Piper service document. Using an AD to make this inspection mandatory is no longer warranted. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n2 October 2008","sortOrder":0},{"sectionNumber":"AD/PA-25/19","sectionType":"part","heading":"AD/PA-25/19","content":"## AD/PA-25/19","sortOrder":1},{"sectionNumber":"Engine Mount - Inspection","sectionType":"part","heading":"Engine Mount - Inspection","content":"## Engine Mount - Inspection","sortOrder":2},{"sectionNumber":"12/2008","sectionType":"part","heading":"12/2008","content":"## 12/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1693},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly one function: cancelling the previous directive. There is no expansion of scope or addition of new regulatory requirements."},"complexity_factors":["Single operative provision: cancellation of previous instrument","No definitions section","No conditional logic, exceptions, or cross-references to other legislation","Document consists of only three substantive sentences"],"plain_english_summary":"**What this does:** This document officially cancels a previous aviation safety rule (Airworthiness Directive AD/PA-25/19) that forced owners of Piper PA-25 Pawnee aircraft to perform regular dye-penetrant inspections on engine mounts.\n\n**Who it affects:** Owners and operators of Piper PA-25 (Pawnee) series aeroplanes — typically agricultural spray planes and glider tugs.\n\n**What it means:**\n- The previous requirement for engine mount inspections every 250 flight hours is **no longer legally mandatory**.\n- The Civil Aviation Safety Authority decided this specific inspection no longer warranted a compulsory Directive (though operators can still do it voluntarily as part of normal maintenance).\n- This removes a regulatory burden unique to Australian operators of these aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled","history":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled/history","analysis":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-25-19-engine-mount-inspection-cancelled/documents"}}