{"id":"F2006B08433","name":"AD/CESSNA 550/5 - Elevator and Rudder Trim System - Inspection","slug":"ad-cessna-550-5-elevator-and-rudder-trim-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115917,"registerId":"commonwealth-F2006B08433-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 550/5 - Elevator and Rudder Trim System - 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 550 (Citation II) Series Aeroplanes\n\n \n\n# AD/CESSNA 550/5 Elevator and Rudder Trim System - Inspection\n\nApplicability: All Models 550 with Unit Nos. 0002 through 0465. Document:  Cessna S.L. No. SL 550-27-6.\n\n# 11/83\n\nCompliance:  Within 100 hours time in service after 30th November 1983 or at the next scheduled inspection for maintenance release issue after 30th November 1983 whichever is the later.\n\n \n\nBackground:  The manufacturer has become aware that some elevator and rudder trim tab stop blocks are incorrectly installed and torqued and also that some of those systems trib tab actuator chain guards are incorrectly installed.\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":1408},"content_quality":"ok","complexity_score":2,"rejection_reason":"","scope_assessment":{"changed":false,"description":"The directive remains precisely targeted at its original purpose: inspecting trim system installation defects on specific Cessna 550 aircraft. No expansion of scope beyond the original elevator and rudder trim components."},"complexity_factors":["Single, specific maintenance task with clear applicability criteria (serial number range 0002-0465)","External cross-reference to manufacturer service letter for technical details","Standard aviation terminology (time in service, maintenance release) assumes industry knowledge"],"plain_english_summary":"This Civil Aviation Safety Authority Airworthiness Directive requires owners of Cessna Citation II (Model 550, S/N 0002–0465) to inspect elevator and rudder trim systems for incorrectly installed or torqued trim-tab stop blocks and misinstalled chain guards, following Cessna Service Letter SL 550-27-6. \n\nInspections must be done within 100 flight hours after 30 November 1983 or at the next scheduled maintenance. The rule addresses a safety risk: faulty trim components can impede control and lead to loss of aircraft control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection","history":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection/history","analysis":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection/analysis","conflicts":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection/conflicts","importantCases":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection/important-cases","documents":"/api/acts/ad-cessna-550-5-elevator-and-rudder-trim-system-inspection/documents"}}