{"id":"F2006B05772","name":"AD/PA-31/68 - Air Control Cable - Modification","slug":"ad-pa-31-68-air-control-cable-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135631,"registerId":"commonwealth-F2006B05772-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/68 - Air Control Cable - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-31 Series Aeroplanes\n\n \n\nAD/PA-31/68 Air Control Cable - Modification 6/78\n\nApplicability: Model PA-31T with S/Nos. 31T-7400002 to 31T-7720057. Document:  Piper SB No. 585.\n\nCompliance: Within 100 hours time in service after 30 June 1978.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1788},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This remains a targeted safety instruction addressing a specific mechanical defect in identified aircraft. It has not expanded beyond its original purpose of mandating a single airframe modification."},"complexity_factors":["Extremely short length (under 100 words)","No defined terms or glossary","Single compliance requirement with no exceptions or conditions","No cross-references to other legislation","Simple applicability test (specific model and serial number range)"],"plain_english_summary":"**What this does:**\nThis is a safety rule requiring owners of specific Piper aircraft to modify their air control cables (the wires that connect the pilot's controls to the plane's wing and tail surfaces) to prevent potential failures.\n\n**Who it affects:**\nOwners and operators of **Piper PA-31T** aeroplanes with serial numbers between **31T-7400002 and 31T-7720057**.\n\n**What must be done:**\nThe aircraft owner must carry out the modification procedure described in **Piper Service Bulletin No. 585** within 100 hours of flight time after 30 June 1978.\n\n**Why it matters:**\nFaulty control cables can lead to loss of aircraft control. This rule ensures specific planes receive a mandatory hardware fix to keep them airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-68-air-control-cable-modification","history":"/api/acts/ad-pa-31-68-air-control-cable-modification/history","analysis":"/api/acts/ad-pa-31-68-air-control-cable-modification/analysis","conflicts":"/api/acts/ad-pa-31-68-air-control-cable-modification/conflicts","importantCases":"/api/acts/ad-pa-31-68-air-control-cable-modification/important-cases","documents":"/api/acts/ad-pa-31-68-air-control-cable-modification/documents"}}