{"id":"F2006B08137","name":"AD/CESSNA 310/1 - Vertical Angle and Spar Cap Interference - Inspection","slug":"ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115281,"registerId":"commonwealth-F2006B08137-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 310/1 - Vertical Angle and Spar Cap Interference - 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)  Cessna 310 Series Aeroplanes\n\n \n\nAD/CESSNA 310/1 Vertical Angle and Spar Cap NK\n\nInterference - Inspection\n\nApplicability: All model 310 prior to S/Nos. 35139. Document: Cessna SL No. 310-3.\n\nCompliance: At intervals not exceeding 25 hours time in service.\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":1575},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope—mandating specific structural inspections for early-model Cessna 310 aircraft. There is no evidence of scope expansion beyond this original safety purpose."},"complexity_factors":["Extremely short instrument (under 200 words)","Single operational requirement with clear time-based trigger","No interpretation section or defined terms","Minimal cross-referencing (only to external Cessna Service Letter)","Simple binary applicability test (serial number threshold)"],"plain_english_summary":"**What this is:** An Airworthiness Directive (mandatory safety order) from the Civil Aviation Safety Authority (CASA) for certain Cessna aircraft.\n\n**Who it affects:** Owners and operators of **Cessna 310 model aircraft** with serial numbers **before 35139**.\n\n**What it requires:** You must inspect specific structural parts of the aircraft—the **vertical angle** (a structural support piece) and the **spar cap** (a reinforced section of the wing's main beam)—for interference (unwanted contact or rubbing). This inspection must happen **every 25 hours of flight time**.\n\n**Why it matters:** Interference between these structural components could indicate wear, improper installation, or structural damage that might compromise the aircraft's safety. Regular checks catch problems before they cause in-flight failures.\n\n**Technical reference:** The directive points to Cessna Service Letter No. 310-3 for detailed inspection instructions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection","history":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection/history","analysis":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection/analysis","conflicts":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection/conflicts","importantCases":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection/important-cases","documents":"/api/acts/ad-cessna-310-1-vertical-angle-and-spar-cap-interference-inspection/documents"}}