{"id":"F2006B05934","name":"AD/PA-36/18 - Wing Main Spar Carry Through Assembly - Inspection","slug":"ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136051,"registerId":"commonwealth-F2006B05934-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-36/18 - Wing Main Spar Carry Through Assembly -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-36 (Pawnee Brave) Series Aeroplanes\n\n \n\nAD/PA-36/18 Wing Main Spar Carry Through Assembly - Inspection\n\n\n5/77\n\n \n\nApplicability: All models with S/Nos. 36-7360001 to 36-756003 inclusive, with Main Spar Carry Through Assembly P/N 97370-00 installed.\n\n \n\nDocument: Piper SB No. 552.\n\n \n\nCompliance: As detailed in the requirement document.\n\n \n\nNote: Retirement of Wing Main Spar Carry Through Assembly is detailed in AD/PA- 36/6A.\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":2114},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive maintains a precise, technical scope limited to inspection requirements for a single structural component (wing main spar carry-through assembly) on specific Piper PA-36 models. No evidence of scope expansion beyond the original aviation safety purpose."},"complexity_factors":["Substantive requirements are contained entirely in an external document (Piper Service Bulletin No. 552) incorporated by reference","Narrow applicability requiring verification of specific aircraft serial numbers and part numbers","Technical aviation maintenance terminology assumed to be understood by the target audience (aircraft engineers and operators)","Cross-reference to complementary directive (AD/PA-36/6A) for complete regulatory picture regarding component lifecycle"],"plain_english_summary":"This is a **safety directive** (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for certain **Piper PA-36 agricultural aircraft** (Pawnee Brave series).\n\n**What it does:**\n- Requires inspection of the **wing main spar carry-through assembly** — the critical structural component that connects the left and right wings through the aircraft's fuselage.\n- Operators must follow the specific inspection steps outlined in **Piper Service Bulletin No. 552** (the manufacturer’s technical manual).\n\n**Who it affects:**\n- Only applies to aircraft with serial numbers between **36-7360001 and 36-756003** that have a specific part installed (Main Spar Carry Through Assembly Part Number 97370-00).\n\n**Important context:**\n- This directive only covers *inspection* requirements. If the assembly needs to be permanently retired (taken out of service), that process is governed by a separate directive (**AD/PA-36/6A**)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection","history":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection/history","analysis":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection/analysis","conflicts":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection/conflicts","importantCases":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection/important-cases","documents":"/api/acts/ad-pa-36-18-wing-main-spar-carry-through-assembly-inspection/documents"}}