{"id":"F2006B08311","name":"AD/CESSNA 400/25 - Elevator Torque Tube Fitting - Inspection","slug":"ad-cessna-400-25-elevator-torque-tube-fitting-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115716,"registerId":"commonwealth-F2006B08311-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/25 - Elevator Torque Tube Fitting - 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 400 Series Aeroplanes\n\n \n\nAD/CESSNA 400/25 Elevator Torque Tube Fitting - Inspection 5/71\n\nApplicability: All 401 series with S/Nos. prior to 401B0119. All 402 series with S/Nos. prior to 402B0122. All 411 series with S/Nos. prior to 411-0301.\n\n \n\nDocument: Cessna SL ME71-8.\n\n \n\nCompliance: Within 100 hours time in service after 30 June 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\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1271},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow technical scope. It targets a single safety-critical inspection (elevator torque tube fitting) for specific aircraft models, with no evidence of scope creep or expansion beyond this original mechanical safety mandate."},"complexity_factors":["Extremely short length (single page)","No defined terms or interpretation section","Single compliance requirement with straightforward deadline","Clear applicability limited to specific serial number ranges","Only one external reference (Cessna Service Letter ME71-8)"],"plain_english_summary":"This Airworthiness Directive (AD) is a mandatory safety instruction for specific Cessna aircraft. **What it requires:** Owners and operators must inspect the **elevator torque tube fitting**—a critical mechanical part that connects the pilot's control inputs to the elevator (the flap on the tail that makes the plane go up or down). **Which aircraft are affected:** Cessna 401, 402, and 411 series planes with specific serial numbers (generally older models manufactured before 1971). **When to comply:** The inspection must be done within 100 hours of flying time after 30 June 1971. **Why it matters:** This prevents potential failures in the flight control system that could cause loss of control. The directive references Cessna Service Letter ME71-8 for the exact inspection procedure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection","history":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection/history","analysis":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection/analysis","conflicts":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection/conflicts","importantCases":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection/important-cases","documents":"/api/acts/ad-cessna-400-25-elevator-torque-tube-fitting-inspection/documents"}}