{"id":"F2006B08417","name":"AD/CESSNA 550/12 - Elevator Trim Take-Off Range Marker","slug":"ad-cessna-550-12-elevator-trim-take-off-range-marker","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115884,"registerId":"commonwealth-F2006B08417-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 550/12 - Elevator Trim Take-Off Range Marker","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 550 (Citation II) Series Aeroplanes\n\n \n\nAD/CESSNA 550/12 Elevator Trim Take-Off Range Marker 7/86\n\nApplicability: Model S550 S/Nos -0001 to 0034.\n\n \n\nRequirement: Action in accordance with Cessna SB S550-27-1.\n\n \n\nCompliance: Prior to the issue of the next Maintenance Release after 31 July 1986.\n\n \n\nBackground:  This Directive is issued to ensure the elevator trim range marker is in the correct position.\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":1663},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope. It addresses only the specific safety issue of elevator trim marker positioning on early serial number Cessna S550 aircraft, with no expansion to other models, systems, or operational requirements."},"complexity_factors":["Single, unambiguous operational requirement","No defined terms or interpretation section","No nested conditions or exceptions","Limited applicability (specific model and serial number range only)","External reference to single technical standard (Cessna Service Bulletin)"],"plain_english_summary":"This rule orders owners/operators of Cessna Model S550 (serials 0001–0034) to inspect and correct the elevator trim take‑off range marker per Cessna Service Bulletin S550‑27‑1, and complete the work before the next maintenance release issued after July 31, 1986. It prevents pilots from mis-setting trim for takeoff, reducing the risk of loss of control during a critical phase."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker","history":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker/history","analysis":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker/analysis","conflicts":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker/conflicts","importantCases":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker/important-cases","documents":"/api/acts/ad-cessna-550-12-elevator-trim-take-off-range-marker/documents"}}