{"id":"F2008L02642","name":"AD/PA-31/68 - Air Control Cable - Modification - CANCELLED","slug":"ad-pa-31-68-air-control-cable-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74679,"registerId":"commonwealth-F2008L02642-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-31 Series Aeroplanes","sectionType":"division","heading":"Piper PA-31 Series Aeroplanes","content":"### Piper PA-31 Series Aeroplanes\n\n| AD/PA-31/68 | Air Control Cable - Modification | 8/2008 |\n| ----------- | -------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                   |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 31 July 2008.                                                                                                                                                                                                                        |\n| Background:  | This unique Australian AD required once-only modification of the pressurisation system air control cable in accordance with Piper SB No. 585. The AD required compliance within 100 hours TIS after June 1978. All affected aircraft have now been modified. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n12 June 2008","sortOrder":0},{"sectionNumber":"AD/PA-31/68","sectionType":"part","heading":"AD/PA-31/68","content":"## AD/PA-31/68","sortOrder":1},{"sectionNumber":"Air Control Cable - Modification","sectionType":"part","heading":"Air Control Cable - Modification","content":"## Air Control Cable - Modification","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2080},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates previous obligations rather than expanding scope. It removes the mandate for aircraft modifications since compliance has been achieved fleet-wide."},"complexity_factors":["Single operative sentence stating the cancellation","No definitions or interpretation sections","No cross-references to other legislative instruments","No conditional logic, exceptions, or compliance timelines","Background text is purely historical narrative"],"plain_english_summary":"This document officially **cancels an old aviation safety rule** (Airworthiness Directive AD/PA-31/68) that applied to **Piper PA-31 series aircraft** (twin-engine planes often used for charter flights).\n\n**What the old rule required:**\nA one-time modification to the pressurisation system's air control cable, carried out according to manufacturer guidelines (Piper Service Bulletin No. 585). Owners had to complete this fix within 100 hours of flying time after June 1978.\n\n**Why it was cancelled:**\nThe Civil Aviation Safety Authority cancelled this directive because every affected aircraft has already been modified. The safety issue has been resolved across the entire fleet, so the mandatory repair requirement is no longer necessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled","history":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled/history","analysis":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-31-68-air-control-cable-modification-cancelled/documents"}}