{"id":"F2006B05592","name":"AD/PA-28/32 - Pitch Trim Switch - Modification","slug":"ad-pa-28-32-pitch-trim-switch-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135201,"registerId":"commonwealth-F2006B05592-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/32 - Pitch Trim Switch -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-28 Series Aeroplanes\n\n \n\nAD/PA-28/32 Pitch Trim Switch - Modification 7/71\n\nApplicability: Model PA-28-180 with S/Nos 28-4378 to 28-5859, 28-7105001 to 28-7105122.\n\nModel PA-28R-180 with S/Nos. 28R-30005 to 28R-31270, 28R-7130001 to 28R-7130005.\n\nModel PA-28R-200 with S/Nos. 28R-35001 to 28R-35820, 28R-7135001 to 28R- 7135102.\n\nModel PA-28-235 with S/Nos. 28-11040 to 28-11378, 28-711001 to 28-7110011,\n\nfitted with rocker type trim switch on pilot’s control wheel.\n\n \n\nDocument: Piper SB No. 332.\n\n \n\nCompliance: Within 200 hours time in service after 30 July 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1378},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: mandating a specific hardware modification for defined aircraft models based on a manufacturer service bulletin. There is no evidence of scope creep beyond the original safety intent."},"complexity_factors":["Multiple specific serial number ranges across four aircraft sub-models requiring precise identification","Reference to external technical document (Piper Service Bulletin No. 332) without reproducing the actual modification steps","Use of technical aviation terminology (rocker type trim switch, time in service) that assumes familiarity with aircraft maintenance"],"plain_english_summary":"This Airworthiness Directive (AD) mandates a safety modification for specific Piper Cherokee and Arrow aircraft models.\n\n**Which aircraft?**\nFour specific models of Piper PA-28 series planes (PA-28-180, PA-28R-180, PA-28R-200, and PA-28-235) with particular serial numbers, but **only** if they have a \"rocker type\" pitch trim switch mounted on the pilot's control wheel (control yoke).\n\n**What action is required?**\nOwners or operators must modify the pitch trim switch according to the instructions in **Piper Service Bulletin No. 332**. This bulletin (essentially a manufacturer-issued repair notice) contains the technical specifications for the fix.\n\n**Deadline?**\nThe work must be completed within 200 hours of flight time after 30 July 1971.\n\n**Why is this important?**\nThe pitch trim system adjusts the aircraft's nose-up or nose-down attitude. A faulty rocker switch could potentially cause sudden or unintended pitch changes, creating a safety risk during flight. This directive ensures the switch meets safer design standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification","history":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification/history","analysis":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification/analysis","conflicts":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification/conflicts","importantCases":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification/important-cases","documents":"/api/acts/ad-pa-28-32-pitch-trim-switch-modification/documents"}}