{"id":"F2006B05654","name":"AD/PA-30/12 - Seat Frame - Modification","slug":"ad-pa-30-12-seat-frame-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135345,"registerId":"commonwealth-F2006B05654-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-30/12 - Seat Frame - 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-30 & 39 (Twin Comanche) Series Aeroplanes\n\n \n\nAD/PA-30/12 Seat Frame - Modification 5/71\n\nApplicability: Model PA-30 with S/Nos. 30-1717 and 30-1745 to 30-2000 having vertically adjustable pilot and/or co-pilot seat installations.\n\n \n\nDocument: Piper SB No. 336.\n\n \n\nCompliance: Within 100 hours time in service after 31 May 1971.\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":2408},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains narrowly focused on its original purpose: correcting a specific mechanical defect in seat frames for defined aircraft serial numbers. No expansion of regulatory scope is evident."},"complexity_factors":["Reference to external technical document (Piper Service Bulletin 336) without including the actual modification instructions","Precise serial number ranges requiring verification against aircraft registration records","Technical aviation term 'time in service' requiring specialist knowledge to calculate compliance deadline"],"plain_english_summary":"**What this does**\nThis safety rule requires owners of specific Piper PA-30 Twin Comanche aircraft to modify the pilot and co-pilot seat frames to fix a safety defect.\n\n**Who it affects**\nOwners and operators of Piper PA-30 aircraft with serial numbers **30-1717** or serial numbers between **30-1745 and 30-2000**, but **only if** those planes have vertically adjustable seats for the pilot or front passenger.\n\n**What you must do**\n- Carry out the modifications exactly as described in **Piper Service Bulletin No. 336** (the manufacturer's official repair instructions)\n- Finish the work within **100 hours of flying time** after 31 May 1971\n\n**Why it matters**\nThis addresses a structural weakness in the seat frame that could fail during flight, potentially causing loss of pilot control or injury."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-30-12-seat-frame-modification","history":"/api/acts/ad-pa-30-12-seat-frame-modification/history","analysis":"/api/acts/ad-pa-30-12-seat-frame-modification/analysis","conflicts":"/api/acts/ad-pa-30-12-seat-frame-modification/conflicts","importantCases":"/api/acts/ad-pa-30-12-seat-frame-modification/important-cases","documents":"/api/acts/ad-pa-30-12-seat-frame-modification/documents"}}