{"id":"F2006B04112","name":"AD/BEECH 60/8 - Engine Mount Bolt Nuts","slug":"ad-beech-60-8-engine-mount-bolt-nuts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43801,"registerId":"commonwealth-F2006B04112-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 60/8 - Engine Mount Bolt Nuts","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 60 (Duke) Series Aeroplanes\n\n \n\nAD/BEECH 60/8 Engine Mount Bolt Nuts 8/70\n\nApplicability: All models with S/Nos. P-5 and subsequent. Requirement:  Action in accordance with Beechcraft SI No. 0396-241. Compliance:               Within 25 hours’ time in service after 21 August 1971.\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":1513},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This airworthiness directive remains a discrete, targeted safety instrument addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating inspection and replacement of engine mount bolt nuts."},"complexity_factors":["Single, unambiguous maintenance requirement","Clear applicability limited to specific aircraft serial number range (P-5 and subsequent)","Straightforward compliance timeframe (25 hours 'time in service')","No conditional clauses, exceptions, or nested cross-references to other legislative provisions"],"plain_english_summary":"This airworthiness directive mandates urgent safety maintenance on specific **Beechcraft 60 (Duke) aircraft**.\n\n**What it requires**\nOwners or operators must inspect and replace the engine mount bolt nuts on affected aeroplanes, following the procedures detailed in Beechcraft Service Instruction No. 0396-241.\n\n**Who it applies to**\nAll Beechcraft 60 (Duke) series models with serial numbers P-5 and subsequent (newer aircraft).\n\n**Compliance deadline**\nThe maintenance must be completed within 25 hours of flight time after 21 August 1971.\n\n**Why it matters**\nEngine mounts physically attach the engine to the aircraft structure. Loose or defective bolt nuts could lead to engine separation during flight, with potentially catastrophic consequences. This directive addresses a known hardware defect to prevent mechanical failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts","history":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts/history","analysis":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts/analysis","conflicts":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts/conflicts","importantCases":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts/important-cases","documents":"/api/acts/ad-beech-60-8-engine-mount-bolt-nuts/documents"}}