{"id":"F2006B03741","name":"AD/BEECH 23/28 - Control Column and Mixture Control","slug":"ad-beech-23-28-control-column-and-mixture-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43334,"registerId":"commonwealth-F2006B03741-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/28 - Control Column and Mixture 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)  Beechcraft 19, 23 and 24 Series Aeroplanes\n\n \n\nAD/BEECH 23/28 Control Column and Mixture Control 12/75\n\nApplicability: Model C23 with S/Nos. M-1413 to M1649. Requirement:  Action in accordance with Beechcraft SI No. 0747-155.\n\nCompliance: Within 100 hours time in service after 31 December 1975.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1572},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow technical scope. It addresses a specific safety defect in the control column and mixture control systems of specific Beechcraft C23 aircraft manufactured within a defined serial number range, with no expansion beyond this original safety purpose."},"complexity_factors":["Single sentence requirement referencing only one external manufacturer document","No defined terms or interpretation section","Simple applicability limited to specific model and serial number range","Straightforward compliance deadline with no exceptions or extensions","No conditional logic, cross-references to other legislation, or nested provisions"],"plain_english_summary":"**What this is:** A safety directive requiring specific maintenance on certain Beechcraft aeroplanes to address issues with the control column and mixture control.\n\n**Who it affects:** Owners and operators of Beechcraft Model C23 Sundowner aircraft with serial numbers between M-1413 and M-1649.\n\n**What it requires:** You must perform maintenance actions exactly as described in Beechcraft Service Instruction No. 0747-155 (a technical manual from the aircraft manufacturer).\n\n**When to do it:** Within 100 hours of flight time after 31 December 1975. This measures \"time in service\" (actual flying hours), not calendar time."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-28-control-column-and-mixture-control","history":"/api/acts/ad-beech-23-28-control-column-and-mixture-control/history","analysis":"/api/acts/ad-beech-23-28-control-column-and-mixture-control/analysis","conflicts":"/api/acts/ad-beech-23-28-control-column-and-mixture-control/conflicts","importantCases":"/api/acts/ad-beech-23-28-control-column-and-mixture-control/important-cases","documents":"/api/acts/ad-beech-23-28-control-column-and-mixture-control/documents"}}