{"id":"F2006B03752","name":"AD/BEECH 23/38 - Control Column Bearing Assemblies","slug":"ad-beech-23-38-control-column-bearing-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43346,"registerId":"commonwealth-F2006B03752-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/38 - Control Column Bearing Assemblies","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 23/38 Control Column Bearing Assemblies 5/79\n\nApplicability: All model B19 with S/Nos. MB-866 to MB-904.\n\n \n\nAll model C23 with S/Nos. M-1971, M-1980 to M-2076. All model C24R with S/Nos. MC-533, MC-537 to MC-611.\n\nRequirement: Action in accordance with Beechcraft SI No. 1017. Compliance:  Within 100 hours time in service after 31 May 1979.\n\nBackground:  The manufacturer advises that the subject control column bearing assemblies may have been filed or ground in the weld area.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1345},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope. It addresses a specific manufacturing defect in control column bearing assemblies for particular Beechcraft aircraft models and has not expanded beyond this original safety purpose."},"complexity_factors":["Short, single-issue directive with clear applicability","Multiple specific serial number ranges across three aircraft models requiring cross-checking","Single external technical reference (Beechcraft SI No. 1017) contains the actual procedural details","Minimal conditional language or nested exceptions"],"plain_english_summary":"This directive orders owners of specific Beechcraft light aircraft to inspect and repair potentially dangerous control column bearing assemblies.\n\n**Who is affected**\nOwners and operators of:\n- Beechcraft Model B19 (Serial Numbers MB-866 to MB-904)\n- Beechcraft Model C23 (Serial Numbers M-1971, and M-1980 to M-2076)  \n- Beechcraft Model C24R (Serial Numbers MC-533, and MC-537 to MC-611)\n\n**What must be done**\nAircraft owners must follow the procedures in **Beechcraft Service Instruction No. 1017** to check the control column bearing assemblies. This must be completed within **100 hours of flight time** after 31 May 1979.\n\n**Why this matters**\nThe manufacturer discovered that some bearing assemblies may have been incorrectly filed or ground down in the weld area during production. This could weaken the control column—the critical component connecting the pilot's yoke to the aircraft's control surfaces—potentially leading to loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies","history":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies/history","analysis":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies/analysis","conflicts":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies/conflicts","importantCases":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies/important-cases","documents":"/api/acts/ad-beech-23-38-control-column-bearing-assemblies/documents"}}