{"id":"F2006B07068","name":"AD/SM-260/1 - Engine Mount - Modification","slug":"ad-sm-260-1-engine-mount-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48817,"registerId":"commonwealth-F2006B07068-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-260/1 - Engine Mount - 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)  SIAI Marchetti 260 Series Aeroplanes\n\n \n\nAD/SM-260/1 Engine Mount - Modification 5/70\n\nApplicability: All F260 series with S/Nos. 003, 101 to 125 and 2-29. Document:  SIAI Marchetti SB No. 260B3.\n\nCompliance: As detailed in the requirement document.\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\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":1922},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope addressing a specific mechanical airworthiness issue (engine mount integrity) on particular SIAI Marchetti aircraft models. There is no evidence of scope expansion beyond this original safety purpose."},"complexity_factors":["Extremely brief text (less than 50 words of substantive content)","Narrow applicability limited to specific aircraft serial numbers only","Delegates all technical detail to an external manufacturer document (Service Bulletin 260B3)","No defined terms, exceptions, or conditional provisions","Single, clear compliance action with no alternative methods stated"],"plain_english_summary":"This Airworthiness Directive legally requires owners/operators of SIAI Marchetti F260 aircraft with serial numbers 003, 101–125, and 2–29 to modify the engine mount per the manufacturer's Service Bulletin No. 260B3. The modification is mandatory before flying: it remedies a fatigue/design weakness that could allow in‑flight engine separation and catastrophic loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-260-1-engine-mount-modification","history":"/api/acts/ad-sm-260-1-engine-mount-modification/history","analysis":"/api/acts/ad-sm-260-1-engine-mount-modification/analysis","conflicts":"/api/acts/ad-sm-260-1-engine-mount-modification/conflicts","importantCases":"/api/acts/ad-sm-260-1-engine-mount-modification/important-cases","documents":"/api/acts/ad-sm-260-1-engine-mount-modification/documents"}}