{"id":"F2006B04200","name":"AD/BEECH 90/1 - Engine Oil Pressure Gauges - Modification","slug":"ad-beech-90-1-engine-oil-pressure-gauges-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43956,"registerId":"commonwealth-F2006B04200-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/1 - Engine Oil Pressure Gauges - Modification","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 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/1 Engine Oil Pressure Gauges - Modification 11/67\n\nApplicability: Model 65-90 prior to S/No. LJ-22. Document:  Beechcraft SB 65-6.\n\nCompliance: Forthwith.\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":1662},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow, technical scope — requiring a specific hardware modification (oil pressure gauges) on a specific subset of aircraft. There is no expansion into broader operational, maintenance, or certification requirements."},"complexity_factors":["Single-page document with no sections or subsections","No defined terms or interpretation provisions","Single unconditional compliance requirement ('forthwith')","Applicability limited to specific aircraft model and serial number range","No cross-references to other legislation beyond the enabling regulations"],"plain_english_summary":"**What this is:** An Airworthiness Directive — a mandatory safety notice issued by the Civil Aviation Safety Authority (CASA).\n\n**Who it affects:** Owners and operators of Beechcraft Model 65-90 King Air aeroplanes with serial numbers earlier than LJ-22.\n\n**What it requires:** You must modify the engine oil pressure gauges on these aircraft immediately (the directive uses the word \"forthwith,\" which means without delay). The specific technical instructions for the modification are contained in a manufacturer document called Beechcraft Service Bulletin 65-6.\n\n**Why it matters:** Faulty oil pressure gauges can fail to warn pilots of engine problems, potentially leading to engine damage or in-flight failure. This directive ensures pilots receive accurate oil pressure readings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification","history":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification/history","analysis":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification/analysis","conflicts":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification/conflicts","importantCases":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification/important-cases","documents":"/api/acts/ad-beech-90-1-engine-oil-pressure-gauges-modification/documents"}}