{"id":"F2006B06801","name":"AD/SC7/28 - Flight Control Trim Chain Connecting Link","slug":"ad-sc7-28-flight-control-trim-chain-connecting-link","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114658,"registerId":"commonwealth-F2006B06801-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/SC7/28 Flight Control Trim Chain Conn","sectionType":"part","heading":"AD/SC7/28 Flight Control Trim Chain Connecting Link 8/2000","content":"# AD/SC7/28 Flight Control Trim Chain Connecting Link 8/2000\n\nApplicability: All SC7 Series aircraft.\n\nRequirement: Inspect in accordance with Shorts Mandatory Service Bulletin 27-76. 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":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD’s scope is limited to all SC7 Series aircraft and requires inspection per Shorts Mandatory Service Bulletin 27-76 following a report of an incorrectly manufactured ‘spring clip’ connecting link. The instrument text shows no change from that stated intent and contains no broader expansions, exemptions, or additional obligations."},"complexity_factors":["Narrow applicability: applies only to SC7 Series aircraft (limited population)","Single required action: inspection only (low procedural complexity)","External dependence: substantive inspection procedure and compliance timing are set by Shorts Mandatory Service Bulletin 27-76 (cross-reference increases implementation dependency)","Delegated issuance under subregulation 39.1(1) CAR 1998 (administrative/authority linkage)","Compliance burden borne by aircraft owners/operators (costs to inspect, possible follow-up maintenance)","Clear effective date (10 August 2000) and concise requirement language (reduces legal ambiguity)"],"plain_english_summary":"This Airworthiness Directive requires all SC7 series aircraft to have the flight-control trim chain connecting link inspected in line with Shorts Mandatory Service Bulletin 27-76 because a report found a trim cable/chain assembled with a non-Class 1 ‘spring clip’ link. The AD is effective 10 August 2000.\n\nCASA (by delegate under subregulation 39.1(1) CAR 1998) mandates the inspection; aircraft owners/operators pay to comply and must follow the service bulletin’s instructions and timing, which provide the technical inspection detail."},"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 single aircraft type's trim system. It has not expanded beyond this safety-critical maintenance requirement."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined applicability (all SC7 Series aircraft)","Single requirement referencing external technical document (Service Bulletin 27-76)","No nested exceptions or conditional logic","No cross-references to other legislation beyond basic enabling power (CAR 1998 subreg 39.1(1))","Straightforward compliance structure (follow the manufacturer's bulletin)"],"plain_english_summary":"This AD requires owners/operators of Shorts SC7 (Skyvan) aircraft in Australia to inspect the trim chain connecting link after the manufacturer found some assemblies used a spring-clip link that does not meet Class 1 locking. A failed trim connection could impair pitch control. Compliance with Shorts Mandatory Service Bulletin 27-76 is required. The directive took effect 10 August 2000."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link","history":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link/history","analysis":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link/analysis","conflicts":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link/conflicts","importantCases":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link/important-cases","documents":"/api/acts/ad-sc7-28-flight-control-trim-chain-connecting-link/documents"}}