{"id":"F2006B08364","name":"AD/CESSNA 400/80 - Elevator Trim Tab Actuator Chain Guard Attachment - Inspection","slug":"ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115774,"registerId":"commonwealth-F2006B08364-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/80 - Elevator Trim Tab Actuator Chain Guard Attachment - 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\n# AD/CESSNA 400/80 Elevator Trim Tab Actuator Chain Guard\n\nAttachment - Inspection\n\nApplicability: All model 404 with S/Nos. 404-0638 to 404-0663. Document:  Cessna Customer Care SIL No. ME80-44.\n\nCompliance: Within 100 hours time in service after 31 March 1981.\n\n# 3/81\n\n \n\nBackground: Incorrect length screws may have been used to attach the chain guard to the trim tab actuator.\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":1286},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original targeted scope addressing a specific manufacturing defect on a limited production batch of aircraft. There is no indication of expansion beyond the original safety intent to inspect screw lengths on the trim tab actuator chain guard."},"complexity_factors":["Extremely brief instrument (approximately 150 words)","Narrow applicability limited to specific aircraft model and serial number range (404-0638 to 404-0663)","Single compliance action with clear deadline (100 hours time in service)","No cross-references to other legislation or dependent provisions","Plain language background with minimal technical jargon"],"plain_english_summary":"This airworthiness directive requires owners/operators of Cessna 404 aeroplanes serial numbers 404-0638 through 404-0663 to inspect the screws securing the elevator trim-tab actuator chain guard within 100 flight hours after 31 March 1981. It addresses a manufacturing error where incorrect screw lengths could let the guard detach or jam the trim mechanism, risking loss of pitch control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection","history":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection/history","analysis":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection/analysis","conflicts":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection/conflicts","importantCases":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection/important-cases","documents":"/api/acts/ad-cessna-400-80-elevator-trim-tab-actuator-chain-guard-attachment-inspection/documents"}}