{"id":"F2006B07035","name":"AD/SM-205/13 - Engine Operating Limitation - Installation of Placard and Modification of Tacho Marking","slug":"ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48743,"registerId":"commonwealth-F2006B07035-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/13 - Engine Operating Limitation - Installation of Placard and Modification of Tacho Marking","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 S205 and S208 Series Aeroplanes\n\n \n\nAD/SM-205/13 Engine Operating Limitation - Installation of\n\nPlacard and Modification of Tacho Marking\n\n\n4/71\n\n \n\nApplicability: All models fitted with Lycoming IO-360-A1A engines and Hartzell HC-C2YK- 1/7666A-2 propellers.\n\n \n\nDocument:  SIAI Marchetti SB No. 205B18A. Compliance: Before 30 April 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\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":2748},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope, addressing a specific airworthiness safety issue concerning engine operating limitations for particular aircraft configurations. It has not expanded beyond this technical remedial purpose."},"complexity_factors":["Extremely brief directive (under 100 words) containing a single compliance action","Narrow applicability limited to one specific aircraft type with defined engine and propeller combination","No defined terms, interpretation sections, or legislative cross-references","Only external reference is to manufacturer's technical service bulletin"],"plain_english_summary":"This directive mandates safety modifications to specific aircraft to prevent dangerous engine overspeed conditions.\n\n**Who it affects**\nOwners and operators of **SIAI Marchetti S205 and S208 series aircraft** equipped with:\n- Lycoming IO-360-A1A engines, **and**\n- Hartzell HC-C2YK-1/7666A-2 propellers\n\n**What it requires**\n- **Install a placard** (a physical warning label) in the cockpit displaying critical engine operating limitations\n- **Modify the tachometer markings** (the gauge showing engine speed/revolutions per minute) to clearly indicate safe operating ranges and limits\n\n**Why it matters**\nThese changes ensure pilots can immediately see the maximum safe engine speeds, preventing operation beyond design limits that could cause catastrophic engine failure. The technical specifications for the modifications are contained in the manufacturer's Service Bulletin No. 205B18A."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking","history":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking/history","analysis":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking/analysis","conflicts":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking/conflicts","importantCases":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking/important-cases","documents":"/api/acts/ad-sm-205-13-engine-operating-limitation-installation-of-placard-and-modification-of-tacho-marking/documents"}}