{"id":"F2006B03598","name":"AD/BEA 121/4 - Dual Throttle Control","slug":"ad-bea-121-4-dual-throttle-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43189,"registerId":"commonwealth-F2006B03598-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEA 121/4 - Dual Throttle Control","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)  Beagle B121 (Pup) Series Aeroplanes\n\n \n\nAD/BEA 121/4 Dual Throttle Control 8/70\n\nApplicability: All models modified in accordance with Beagle 121 Series Modification BE 10.\n\n \n\nRequirement:  Inspect the cable assembly connecting the left throttle lever to the lower end of the right throttle lever for signs of kinking of the cable and of distortion of the forward sliding end. Defective cable assemblies shall be replaced before further flight.\n\n \n\nCompliance: At intervals not exceeding 100 hours time in service after incorporation of Beagle 121 Series Modification BE 10.\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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1815},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains focused on its original purpose: addressing a specific mechanical defect risk in the dual throttle cable assembly of modified Beagle B121 aircraft. There is no evidence of scope expansion beyond this targeted safety concern."},"complexity_factors":["Single, unambiguous applicability criterion (one aircraft type with one specific modification)","One straightforward inspection requirement with two specific defect indicators (kinking and distortion)","Simple binary compliance outcome (defective vs. not defective) with immediate action required","Clear, fixed compliance interval (100 hours time in service) with no conditional triggers or exceptions","No cross-references to other legislation, regulations, or external standards"],"plain_english_summary":"Mandatory inspection for Beagle B121 (Pup) aeroplanes fitted with the factory BE 10 dual-throttle modification: every 100 flight hours inspect the cable assembly linking left and right throttle levers for kinks, bends, or distortion/damage to the forward sliding end fitting. If any defect is found, the cable assembly must be replaced before further flight. This prevents throttle jamming or failure and loss of engine power control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bea-121-4-dual-throttle-control","history":"/api/acts/ad-bea-121-4-dual-throttle-control/history","analysis":"/api/acts/ad-bea-121-4-dual-throttle-control/analysis","conflicts":"/api/acts/ad-bea-121-4-dual-throttle-control/conflicts","importantCases":"/api/acts/ad-bea-121-4-dual-throttle-control/important-cases","documents":"/api/acts/ad-bea-121-4-dual-throttle-control/documents"}}