{"id":"F2006B05849","name":"AD/PA-32/52 - Electric Pitch Trim Switch - Modification","slug":"ad-pa-32-52-electric-pitch-trim-switch-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135873,"registerId":"commonwealth-F2006B05849-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-32/52 - Electric Pitch Trim Switch - 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-32 (Cherokee Six) Series Aeroplanes\n\n \n\nAD/PA-32/52 Electric Pitch Trim Switch - Modification 10/77\n\nApplicability: Model PA32-260 with S/Nos. 32-1111 to 32-1297 and 32-7100001 to 32-7100017,\n\nPA-32-300 with S/Nos. 32-40566 to 32-40974 and 32-7140001 to 32-7140049.\n\n \n\nDocument: Piper SB No. 556.\n\n \n\nCompliance: Within 100 hours time in service after 31 October 1977.\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":834},"content_quality":"ok","complexity_score":2,"rejection_reason":"","scope_assessment":{"changed":false,"description":"This directive remains tightly scoped to its original purpose: mandating a specific safety modification to the electric pitch trim switch on defined aircraft models. There is no evidence of scope creep or expansion beyond the technical airworthiness issue it was designed to address."},"complexity_factors":["Single compliance requirement with clear deadline","Limited applicability restricted to specific aircraft serial number ranges","Single external reference document (Piper SB 556)","No defined terms or interpretation sections","No conditional exceptions or nested provisions"],"plain_english_summary":"**What this does:**\nThis directive requires owners of specific Piper Cherokee Six aircraft to modify the electric pitch trim switch—a control that adjusts the aircraft's nose-up or nose-down attitude during flight.\n\n**Who it affects:**\nOwners and operators of:\n- Piper PA-32-260 models with serial numbers 32-1111 to 32-1297 and 32-7100001 to 32-7100017\n- Piper PA-32-300 models with serial numbers 32-40566 to 32-40974 and 32-7140001 to 32-7140049\n\n**What must be done:**\nThe aircraft's electric pitch trim switch must be modified according to **Piper Service Bulletin No. 556** (a manufacturer-issued technical instruction).\n\n**When:**\nThe work must be completed within 100 hours of flight time after 31 October 1977.\n\n**Why it matters:**\nThis addresses a safety issue with the pitch trim switch to prevent potential loss of control during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification","history":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification/history","analysis":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification/analysis","conflicts":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification/conflicts","importantCases":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification/important-cases","documents":"/api/acts/ad-pa-32-52-electric-pitch-trim-switch-modification/documents"}}