{"id":"F2006B05471","name":"AD/PA-23/45 - Engine Control Support Bracket Assembly - Inspection","slug":"ad-pa-23-45-engine-control-support-bracket-assembly-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46257,"registerId":"commonwealth-F2006B05471-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/45 - Engine Control Support Bracket Assembly - Inspection","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-23 (Apache and Aztec) Series Aeroplanes\n\n \n\nAD/PA-23/45 Engine Control Support Bracket Assembly - Inspection\n\n\n7/71\n\n \n\nApplicability: Models PA-23 and PA-23-160 with S/Nos. 23-1 to 23-1870 and model PA-23-250 with S/Nos. 27-1 to 27-140.\n\n \n\nDocument: Piper SB No. 335.\n\n \n\nCompliance: 1. For aircraft with more than 2000 hours total time in service as at 21 June 1971 - within 25 hours time in service and thereafter at intervals not exceeding 100 hours time in service.\n\n \n\n2. For aircraft with less than 200 hours total time in service - within 50 hours time in service after 21 June 1971 and there- after at intervals not exceeding 100 hours time in service.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2013},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope: mandatory repetitive inspection of a specific mechanical component (engine control support bracket assembly) on defined aircraft models. No evidence of scope expansion beyond this safety-critical maintenance requirement."},"complexity_factors":["Single-purpose directive with straightforward inspection mandate","Binary compliance condition based on aircraft flight hours (greater than 2000 vs less than 200)","Limited applicability defined by specific aircraft model numbers and serial number ranges","Single external reference to manufacturer service bulletin (Piper SB No. 335)","No defined terms section or nested legislative cross-references"],"plain_english_summary":"This Airworthiness Directive mandates repetitive safety inspections of the engine control support bracket assembly on specific Piper aircraft models.\n\n**Who it affects**: Owners and operators of Piper PA-23, PA-23-160, and PA-23-250 aircraft with specific serial numbers (ranging from 23-1 to 23-1870 and 27-1 to 27-140).\n\n**What it requires**: Inspection of the engine control support bracket assembly—a component that helps secure the engine controls—to check for cracks, wear, or failure that could affect flight safety.\n\n**When to comply**: \n* **High-time aircraft** (flown more than 2,000 hours): Complete the first inspection within the next 25 flight hours\n* **Low-time aircraft** (flown less than 200 hours): Complete the first inspection within the next 50 flight hours\n* **All aircraft**: Repeat the inspection every 100 flight hours thereafter"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection","history":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection/history","analysis":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection/analysis","conflicts":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection/conflicts","importantCases":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection/important-cases","documents":"/api/acts/ad-pa-23-45-engine-control-support-bracket-assembly-inspection/documents"}}