{"id":"F2006B03756","name":"AD/BEECH 23/42 - Engine Control Rod Safety Washers","slug":"ad-beech-23-42-engine-control-rod-safety-washers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43350,"registerId":"commonwealth-F2006B03756-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 23/42 - Engine Control Rod Safety Washers","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 23/42 Engine Control Rod Safety Washers 8/83\n\nApplicability: Models A23-19, 19A, M19A and B19 with S/Nos. MB-1 to MB-520. Model B19 Sport 150 with S/Nos. MB-521 to MB-905.\n\n \n\nModels 23, A23, A23A, B23 and C23 with S/Nos. M-2 to M-1361. Model C23 Sundowner 180 with S/Nos. M-1362 to M-2348.\n\nModels A23-24 and A24 with S/Nos. MA-1 to MA-368. Model A24R with S/Nos. MC-2 to MC-95.\n\nModels A24R, B24R and C24R Sierra 200 with S/Nos. MC-96 to MC-769.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 1243. Compliance:  Within 100 hours time in service after 30 September 1983.\n\nBackground:  The manufacturer considers it necessary to install a safety feature to the engine control rod ends.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1765},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope as a specific safety modification for engine control rods on identified Beechcraft models. There is no indication of scope creep beyond the original 1983 safety mandate."},"complexity_factors":["Single mechanical modification requirement with clear technical reference","Applicability limited to specific aircraft models and serial number ranges only","Simple compliance trigger (100 hours time in service after fixed date)","Minimal cross-referencing (only refers to manufacturer Service Instruction No. 1243 for technical procedures)"],"plain_english_summary":"This safety order requires owners/operators of specified Beechcraft Model 19, 23, and 24 series aircraft (particular serial-numbered batches) to install manufacturer Service Instruction No. 1243 safety washers on engine control rod ends as a backup fastener. Work must be done within 100 flight hours after 30 September 1983. The washers prevent control-rod separation in flight, reducing the risk of loss of engine control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers","history":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers/history","analysis":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers/analysis","conflicts":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers/conflicts","importantCases":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers/important-cases","documents":"/api/acts/ad-beech-23-42-engine-control-rod-safety-washers/documents"}}