{"id":"F2006B08250","name":"AD/CESSNA 337/4 - Rudder Bar - Modification","slug":"ad-cessna-337-4-rudder-bar-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115519,"registerId":"commonwealth-F2006B08250-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 337/4 - Rudder Bar - 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 337/4 Rudder Bar - Modification 3/67\n\nApplicability: All model 337 with S/Nos. prior to 337-0073. Document:  Cessna SL 67-3.\n\nCompliance: Within 50 hours time in service after 17 March 1967.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\ns\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\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":1272},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains a narrow, technical safety order targeting a specific mechanical component on specific aircraft serial numbers, consistent with its original purpose."},"complexity_factors":["Single, unambiguous operational requirement","No definitions section or interpretive provisions","No cross-references to other legislation","Simple applicability test based solely on aircraft serial number","Clear compliance deadline with no exceptions or extensions mentioned"],"plain_english_summary":"**What this is**\n\nThis is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) requiring specific maintenance action on certain aircraft.\n\n**Who it affects**\n\nOwners and operators of Cessna 337 series aircraft with serial numbers **before 337-0073** (early production models).\n\n**What you must do**\n\nModify the **rudder bar** (the foot-operated control that steers the aircraft while on the ground) in accordance with Cessna Service Letter 67-3.\n\n**When you must comply**\n\nWithin **50 hours of flight time** after 17 March 1967.\n\n**Why this matters**\n\nThis modification addresses a safety defect in the rudder bar assembly. Failing to make this change could compromise the pilot's ability to steer the aircraft safely on the ground."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-4-rudder-bar-modification","history":"/api/acts/ad-cessna-337-4-rudder-bar-modification/history","analysis":"/api/acts/ad-cessna-337-4-rudder-bar-modification/analysis","conflicts":"/api/acts/ad-cessna-337-4-rudder-bar-modification/conflicts","importantCases":"/api/acts/ad-cessna-337-4-rudder-bar-modification/important-cases","documents":"/api/acts/ad-cessna-337-4-rudder-bar-modification/documents"}}