{"id":"F2006B03967","name":"AD/BEECH 55/16 - Engine Plumbing","slug":"ad-beech-55-16-engine-plumbing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43576,"registerId":"commonwealth-F2006B03967-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/16 - Engine Plumbing","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 55, 58 and 95-55 (Baron) Series Aeroplanes\n\n \n\nAD/BEECH 55/16 Engine Plumbing 1/70\n\nApplicability: Model D55 with S/Nos. TE-452 to TE-748. Requirement:  Action in accordance with Beechcraft SI No. 0257-190. Compliance:               Within 100 hours’ time in service after 23 January 1970.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1469},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow technical scope, targeting a specific maintenance requirement for a limited production run of aircraft. No expansion of regulatory scope is evident."},"complexity_factors":["Single, unconditional mandate with no exceptions","No defined terms requiring interpretation","No cross-references to other legislative provisions","Extremely brief (approximately 50 words of substantive content)","Precise applicability limited to specific aircraft model and serial number range"],"plain_english_summary":"**What this does:** This is a safety order (called an Airworthiness Directive) that requires specific Beechcraft Baron aircraft to undergo maintenance on their engine plumbing systems.\n\n**Who it affects:** Owners and operators of **Beechcraft Model D55** aircraft with serial numbers **TE-452 through TE-748**.\n\n**What must be done:** Operators must carry out maintenance work exactly as specified in **Beechcraft Service Instruction No. 0257-190** (a technical manual from the manufacturer).\n\n**When it must be done:** The work must be completed within **100 hours of flight time** after 23 January 1970.\n\n**Why it matters:** This directive addresses potential safety defects in the engine plumbing to prevent mechanical failures that could affect flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-16-engine-plumbing","history":"/api/acts/ad-beech-55-16-engine-plumbing/history","analysis":"/api/acts/ad-beech-55-16-engine-plumbing/analysis","conflicts":"/api/acts/ad-beech-55-16-engine-plumbing/conflicts","importantCases":"/api/acts/ad-beech-55-16-engine-plumbing/important-cases","documents":"/api/acts/ad-beech-55-16-engine-plumbing/documents"}}