{"id":"F2006B05746","name":"AD/PA-31/41 - Exhaust Tailpipe Support Bracket - Installation","slug":"ad-pa-31-41-exhaust-tailpipe-support-bracket-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135578,"registerId":"commonwealth-F2006B05746-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/41 - Exhaust Tailpipe Support Bracket - Installation","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-31/41 Exhaust Tailpipe Support Bracket - Installation 2/76\n\nApplicability: Model PA-31P with S/Nos 31P-1 to 31P-7630009. Document:  Piper SB No. 462A.\n\nCompliance: Within 100 hours time in service after 27 February 1976.\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":1244},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: addressing a specific mechanical defect in defined aircraft models through a mandated hardware installation."},"complexity_factors":["Single-page document with no subdivisions or sections","No defined terms or interpretation clause","Specific and unambiguous applicability (single aircraft model with defined serial number range)","Single compliance requirement with clear deadline and method","No conditional exceptions, cross-references, or nested clauses"],"plain_english_summary":"This directive requires owners and operators of specific **Piper PA-31P aircraft** (serial numbers 31P-1 through to 31P-7630009) to install a support bracket on the exhaust tailpipe.\n\n**Why this matters:** Without proper support, the exhaust tailpipe can crack or fail due to vibration and heat stress. This could lead to dangerous exhaust gas leaks, fire hazards, or carbon monoxide entering the cabin.\n\n**What must be done:** Aircraft operators must install the support bracket following the instructions in **Piper Service Bulletin No. 462A**. This must be completed within **100 hours of flight time** after 27 February 1976.\n\nThis is a straightforward safety fix to prevent mechanical failure in these specific aircraft models."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation","history":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation/history","analysis":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation/analysis","conflicts":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation/conflicts","importantCases":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation/important-cases","documents":"/api/acts/ad-pa-31-41-exhaust-tailpipe-support-bracket-installation/documents"}}