{"id":"F2006B08393","name":"AD/CESSNA 500/19 - Elevator and Rudder Trim System - Inspection","slug":"ad-cessna-500-19-elevator-and-rudder-trim-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115835,"registerId":"commonwealth-F2006B08393-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 500/19 - Elevator and Rudder Trim System -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 500 (Citation) Series Aeroplanes\n\n \n\n# AD/CESSNA 500/19 Elevator and Rudder Trim System - Inspection\n\nApplicability: All Models 500 and 501 with Unit Nos. 001 through 0667. Document:  Cessna S.L. No. SL 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 trim 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":2122},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope targeting specific Cessna aircraft models for a specific safety inspection related to identified manufacturing defects in trim system installation."},"complexity_factors":["Single-issue directive with no interpretation section or defined terms","Narrow applicability limited to specific aircraft models and serial number range (001-0667)","Simple binary compliance requirement (inspect and rectify if necessary)","Straightforward deadline calculation based on flight hours or scheduled maintenance","No cross-references to other legislation or conditional exceptions"],"plain_english_summary":"**What this is:** A mandatory safety inspection order (called an Airworthiness Directive) for specific Cessna business jets.\n\n**Who it affects:** Owners and operators of Cessna 500 and 501 Citation aircraft with serial numbers 001 through 0667.\n\n**What it requires:** You must inspect the elevator and rudder trim systems to check for two specific manufacturing/installation defects:\n- **Trim tab stop blocks** that were installed incorrectly or not tightened to the correct torque (tightness specification)\n- **Chain guards** on the trim tab actuators that were fitted incorrectly\n\n**When to comply:** Within 100 hours of flying time after 30 November 1983, or at the next scheduled maintenance check after that date—whichever comes later.\n\n**Why it matters:** Incorrectly installed trim system components could affect the aircraft's flight controls, potentially compromising the pilot's ability to control the aircraft safely during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection","history":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection/history","analysis":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection/analysis","conflicts":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection/conflicts","importantCases":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection/important-cases","documents":"/api/acts/ad-cessna-500-19-elevator-and-rudder-trim-system-inspection/documents"}}