{"id":"F2006B06903","name":"AD/SD3-60/57 - Flight Control Trim Chain Connecting Link","slug":"ad-sd3-60-57-flight-control-trim-chain-connecting-link","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114783,"registerId":"commonwealth-F2006B06903-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.","sortOrder":0},{"sectionNumber":"AD/SD3-60/57 Flight Control Trim Chain C","sectionType":"part","heading":"AD/SD3-60/57 Flight Control Trim Chain Connecting Link 8/2000","content":"# AD/SD3-60/57 Flight Control Trim Chain Connecting Link 8/2000\n\nApplicability: All SD3-60 aircraft.\n\nRequirement: Inspect in accordance with Shorts Mandatory Service Bulletin SD3-60-27-30. Compliance: As specified in the Requirement document.\n\nThis Airworthiness Directive becomes effective on 10 August 2000.\n\nBackground: The manufacturer received a report indicating that a trim cable/chain assembly had been incorrectly manufactured using ‘spring clip’ connecting link. This means of connection does not meet the requirements for Class 1 locking.\n\n![Signature of Bernard Malcolm Hole Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nBernard Malcolm Hole\n\nDelegate of the Civil Aviation Safety Authority 22 June 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD’s scope is confined to all SD3-60 aircraft and mandates inspection per the named Shorts service bulletin to address a specific manufacturing defect (use of a ‘spring clip’ connecting link that does not meet Class 1 locking). The directive does not broaden applicability or add unrelated requirements beyond the inspection and any corrective actions set out in the referenced service bulletin; effective date 10 August 2000, notified 12 July 2000."},"complexity_factors":["Limited applicability: applies only to SD3-60 aircraft (straightforward population).","Single-action mandate: inspection in accordance with a single named service bulletin (one operative requirement).","External dependence: compliance timing and procedures are set by the referenced Shorts Mandatory Service Bulletin SD3-60-27-30 (requires consulting another document).","Potential follow-on work: inspections may reveal need for replacement/repair, creating variable remedial cost and logistics for operators.","Clear effective and notification dates provided (administrative clarity reduces procedural complexity)."],"plain_english_summary":"This Airworthiness Directive requires all operators of SD3-60 aircraft to inspect the flight control trim chain connecting link following Shorts Mandatory Service Bulletin SD3-60-27-30 because a trim chain assembly was made with a ‘spring clip’ link that does not meet Class 1 locking. Aircraft operators must carry out the inspection and any corrective action at the times specified in the service bulletin; the AD took effect 10 August 2000 and was notified 12 July 2000. Operators bear the inspection and rectification cost and must follow the manufacturer’s instructions."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific manufacturing defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly referenced ('Class 1 locking' — explained in plain language in the background)","No nested exceptions or conditional logic","Single, clear applicability criterion ('All SD3-60 aircraft')","Single requirement referencing an external technical document (the service bulletin)","No cross-references to other legislation beyond the enabling regulation (CAR 1998, subregulation 39.1(1))"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Shorts SD3-60 aircraft to inspect the trim chain connecting link because some assemblies used a non-compliant \"spring clip\" instead of a Class 1 locking link. Failure could lead to loss of trim control and unsafe flight.\n\nAffected parties must follow the inspection steps and deadlines in Shorts Mandatory Service Bulletin SD3-60-27-30. Effective 10 August 2000."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link","history":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link/history","analysis":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link/analysis","conflicts":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link/conflicts","importantCases":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link/important-cases","documents":"/api/acts/ad-sd3-60-57-flight-control-trim-chain-connecting-link/documents"}}