{"id":"F2006B08251","name":"AD/CESSNA 337/6 - Control Systems - Modification","slug":"ad-cessna-337-6-control-systems-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115520,"registerId":"commonwealth-F2006B08251-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 337/6 - Control Systems - 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)  Cessna 337 Series Aeroplanes\n\n \n\nAD/CESSNA 337/6 Control Systems - Modification 4/70\n\nApplicability: All models with S/Nos. 337-1100 to 337-1247. Document:  Cessna SL SE69-28.\n\nCompliance: Within 100 hours time in service after 29 April 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\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":1936},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This maintains its original narrow scope as a specific airworthiness directive targeting a limited production batch of aircraft for a single system modification."},"complexity_factors":["Single operative provision","No defined terms section","No cross-references to other legislative provisions","Simple compliance condition (single deadline and hour limit)","Narrow applicability (specific serial number range only)"],"plain_english_summary":"This Airworthiness Directive (AD) is a legal safety order requiring a specific modification to the control systems of certain Cessna aircraft.\n\n**Who it affects**\nOwners and operators of Cessna 337 series aeroplanes with serial numbers between 337-1100 and 337-1247.\n\n**What you must do**\nCarry out a modification to the aircraft's control systems (the mechanical linkages that allow pilots to steer the aircraft) according to the technical specifications outlined in Cessna Service Letter SE69-28.\n\n**When you must comply**\nThe work must be completed within 100 hours of flight time (measured as \"time in service\") after 29 April 1970.\n\n**Why it matters**\nThis is a mandatory safety fix. Operating the aircraft without making this modification breaches civil aviation regulations and means the aircraft is not legally airworthy (fit to fly)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-6-control-systems-modification","history":"/api/acts/ad-cessna-337-6-control-systems-modification/history","analysis":"/api/acts/ad-cessna-337-6-control-systems-modification/analysis","conflicts":"/api/acts/ad-cessna-337-6-control-systems-modification/conflicts","importantCases":"/api/acts/ad-cessna-337-6-control-systems-modification/important-cases","documents":"/api/acts/ad-cessna-337-6-control-systems-modification/documents"}}