{"id":"F2008L03335","name":"AD/PA-32/55 - Engine Cowling - Drain Hole Provision - CANCELLED","slug":"ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":120195,"registerId":"commonwealth-F2008L03335-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-32 (Cherokee Six) Series Aeropl","sectionType":"division","heading":"Piper PA-32 (Cherokee Six) Series Aeroplanes","content":"### Piper PA-32 (Cherokee Six) Series Aeroplanes\n\n| AD/PA-32/55 | Engine Cowling - Drain Hole Provision | 10/2008 |\n| ----------- | ------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                           |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 25 September 2008.                                                                                                                                                                                           |\n| Background:  | This unique Australian AD specified provision of a drain hole in the engine cowling in accordance with Piper SB No. 580. Compliance was required within 100 hours time in service after February 1978. The AD is no longer required. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n15 August 2008","sortOrder":0},{"sectionNumber":"AD/PA-32/55","sectionType":"part","heading":"AD/PA-32/55","content":"## AD/PA-32/55","sortOrder":1},{"sectionNumber":"Engine Cowling - Drain Hole Provision","sectionType":"part","heading":"Engine Cowling - Drain Hole Provision","content":"## Engine Cowling - Drain Hole Provision","sortOrder":2},{"sectionNumber":"10/2008","sectionType":"part","heading":"10/2008","content":"## 10/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2611},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The instrument has fundamentally changed from requiring a specific physical modification to aircraft (installation of engine cowling drain holes) to formally cancelling that requirement entirely. It has shifted from imposing a mandatory airworthiness obligation to removing it."},"complexity_factors":["Single operative provision (the word 'CANCELLED')","No defined terms or interpretation section","No conditional logic, exceptions, or procedural requirements","Historical background provided for context only"],"plain_english_summary":"**This document cancels a previous aircraft safety requirement.**\n\nThe Civil Aviation Safety Authority has cancelled Airworthiness Directive AD/PA-32/55, which previously mandated that owners of Piper PA-32 (Cherokee Six) aircraft install a drain hole in the engine cowling (the removable cover over the engine).\n\n**What this means:**\n- **Previously**: Aircraft owners were required to modify their engine cowlings to include a drain hole according to Piper Service Bulletin No. 580, allowing fluids to escape and preventing corrosion or fire hazards. This had to be completed by February 1978 or within 100 flight hours thereafter.\n- **Now**: This requirement no longer applies as of 25 September 2008. Owners and operators of these aircraft are no longer legally required to comply with this specific modification.\n\nThis cancellation removes a regulatory burden from aircraft operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled","history":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled/history","analysis":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled/analysis","conflicts":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled/conflicts","importantCases":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled/important-cases","documents":"/api/acts/ad-pa-32-55-engine-cowling-drain-hole-provision-cancelled/documents"}}