{"id":"F2006B04956","name":"AD/CESSNA 170/25 - Engine Power Limitations - Placard","slug":"ad-cessna-170-25-engine-power-limitations-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44827,"registerId":"commonwealth-F2006B04956-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 170/25 - Engine Power Limitations - Placard","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)  Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\n \n\nAD/CESSNA 170/25 Engine Power Limitations - Placard 2/71 Applicability:              All model 172I, 172K and 172L fitted with McCauley IC172 MTM 7653 propellers. Requirement:               Action in accordance with Cessna SL SE70-31.\n\nCompliance: Within 100 hours time in service after 26 February 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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1900},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This remains a targeted, technical safety directive addressing a specific hardware compliance issue with no expansion beyond the original purpose of ensuring proper power limitation warnings in the cockpit."},"complexity_factors":["Single sentence requirement referencing only one external document","No defined terms or interpretation section","No conditional logic, exceptions, or nested provisions","Specific, narrow applicability limited to three aircraft models with one propeller type"],"plain_english_summary":"**What this does:** This is a safety rule (an Airworthiness Directive) requiring specific Cessna aircraft to display a warning about engine power limits.\n\n**Who it affects:** Owners and operators of Cessna models 172I, 172K, and 172L fitted with McCauley IC172 MTM 7653 propellers.\n\n**What you must do:** Carry out the actions specified in Cessna Service Letter SE70-31. This involves installing a placard — a physical warning label — that sets out engine power limitations for these aircraft.\n\n**When:** The work had to be completed within 100 hours of flying time after 26 February 1971."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard","history":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard/history","analysis":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard/analysis","conflicts":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard/conflicts","importantCases":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard/important-cases","documents":"/api/acts/ad-cessna-170-25-engine-power-limitations-placard/documents"}}