{"id":"F2006B02138","name":"AD/AC/78 - Flight Control Chain Connector Link - Inspection","slug":"ad-ac-78-flight-control-chain-connector-link-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41368,"registerId":"commonwealth-F2006B02138-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/78 - Flight Control Chain Connector Link - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nTwin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes\n\nAD/AC/78 Flight Control Chain Connector Link \\- Inspection 1/83\n\nApplicability: Models 500, 500A, 500B, 500U, 520, 560, 560A, 560E, 560F, 680, 680E, 680F, 680F(P), 680FL, 680FL(P), 680T, 680V, 680W, 720, with S/Nos. 1 thru 1854.\n\nModel 500S, S/Nos. 1755 thru 1876 and 3050 thru 3323.\n\nModel 681, S/Nos. 6001 thru 6072.\n\nModel 685, S/Nos. 12001 thru 12066.\n\nModels 690, 690A and 690B, S/Nos. 11001 thru 11566.\n\nModel 690C, S/Nos. 11600 thru 11727.\n\nModel 690D, S/Nos. 15000 thru 15014.\n\nModel 695, S/Nos. 95000 thru 95084.\n\nModel 695A, S/Nos. 96001 thru 96042.\n\nDocument: Gulfstream American (Commander Division) SL No. 353\\. Compliance: Within 100 hours’ time in service after 1 February 1983.\n\nBackground: Installation of flight control chain connector link requires verification.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1741},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in specific aircraft models. There is no evidence of scope expansion beyond the original safety verification purpose."},"complexity_factors":["Enumeration of 22 specific aircraft models with restricted serial number ranges","Technical aviation terminology (flight control chains, time in service)","Cross-reference to external manufacturer document (Service Letter No. 353)","Specific compliance calculation method based on accumulated flight hours"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of certain Twin Commander 500, 600, and 700 series aircraft (specified serial numbers) to have a mechanic inspect the flight‑control chain connector links within 100 flight hours after 1 February 1983, verifying correct installation per Manufacturer Service Letter No. 353.  \n\nThe check prevents improperly installed connector links that could cause in‑flight loss of control by ensuring the cockpit control chain to the flight surfaces is secure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection","history":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection/history","analysis":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection/analysis","conflicts":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection/conflicts","importantCases":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection/important-cases","documents":"/api/acts/ad-ac-78-flight-control-chain-connector-link-inspection/documents"}}