{"id":"F2006B08403","name":"AD/CESSNA 500/3 - Elevator Torque Tube Assembly - Inspection and Replacement","slug":"ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115855,"registerId":"commonwealth-F2006B08403-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 500/3 - Elevator Torque Tube Assembly - Inspection and Replacement","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\nAD/CESSNA 500/3 Elevator Torque Tube Assembly - Inspection\n\nand Replacement\n\nApplicability: All model 500 with S/Nos. 500-0001 to 500-0072. Document:  Cessna SB 55-2.\n\nCompliance: Before issue of certificate of airworthiness.\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\n\n6/73\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1206},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains focused on its original narrow purpose: addressing a specific airworthiness concern regarding elevator torque tube assemblies in early production Cessna 500 aircraft. There is no evidence of scope expansion beyond this specific safety issue."},"complexity_factors":["Extremely short text (under 100 words)","Single mechanical component addressed (elevator torque tube)","Narrow applicability limited to specific serial number range (500-0001 to 500-0072)","Single compliance trigger (before certificate of airworthiness issue)","No nested exceptions or conditional logic","Only one external reference (Cessna SB 55-2)"],"plain_english_summary":"**What this is:** A mandatory safety directive (called an Airworthiness Directive or AD) issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**Who it affects:** Owners and operators of specific Cessna 500 Citation business jets — specifically those with serial numbers 500-0001 through 500-0072 (early production aircraft).\n\n**What it requires:** Before the aircraft can be issued a **certificate of airworthiness** (official permission to fly), the **elevator torque tube assembly** (a critical component that helps control the up-and-down movement of the aircraft's nose) must be inspected and replaced if necessary, following the procedures in Cessna Service Bulletin 55-2.\n\n**Why it matters:** This prevents potential failure of the elevator control system, which could lead to loss of control of the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement","history":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement/history","analysis":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement/analysis","conflicts":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement/conflicts","importantCases":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement/important-cases","documents":"/api/acts/ad-cessna-500-3-elevator-torque-tube-assembly-inspection-and-replacement/documents"}}