{"id":"F2006B06691","name":"AD/RUTAN/1 - Rudder Travel - Modification","slug":"ad-rutan-1-rudder-travel-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48742,"registerId":"commonwealth-F2006B06691-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RUTAN/1 - Rudder Travel - 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)  Rutan Varieze Series Aeroplanes\n\n \n\nAD/RUTAN/1 Rudder Travel - Modification NK\n\nApplicability: All models.\n\n \n\nRequirement: Reduce rudder travel from 3.5\" to 2.0\" by shortening vertical cable between top hole of bellcrank P/N VECS15 and brake arm. Make fine adjustment with the fitting on top of master cylinder. Perform rigging check will full rudder pedal deflection, measuring at the top of the rudder while applying a force of 3 to 5 lbs. on the rudder trailing edge.\n\n \n\nCompliance: Unless already accomplished, before further flight.\n\n \n\nBackground:  Manufacturer’s flight testing has established that under some circumstances the aircraft experiences loss of control. This can be prevented by limiting rudder deflection.\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":1643},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains precisely targeted at the original safety issue: preventing loss of control in Rutan Varieze aircraft through rudder travel limitation. No expansion beyond the specific airworthiness remediation identified in manufacturer flight testing."},"complexity_factors":["Single-page directive with direct mechanical instructions","Specific measurements provided (3.5 inches reduced to 2.0 inches, 3-5 lbs force) requiring no interpretation","No cross-references to other legislative instruments or regulations","Binary compliance condition (accomplished or not) with no exceptions or alternative methods stated","Only standard aviation hardware referenced (bellcrank P/N VECS15, master cylinder)"],"plain_english_summary":"CASA has issued a mandatory Airworthiness Directive for all Rutan Varieze homebuilt aircraft requiring the rudder travel be limited from 3.5\" to 2.0\" by shortening the cable between the bellcrank and brake arm with final adjustment at the master cylinder. A rigging check—full pedal travel and measuring rudder movement while applying 3–5 lb to the trailing edge—is required. The change prevents a discovered loss-of-control condition and must be done before the next flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rutan-1-rudder-travel-modification","history":"/api/acts/ad-rutan-1-rudder-travel-modification/history","analysis":"/api/acts/ad-rutan-1-rudder-travel-modification/analysis","conflicts":"/api/acts/ad-rutan-1-rudder-travel-modification/conflicts","importantCases":"/api/acts/ad-rutan-1-rudder-travel-modification/important-cases","documents":"/api/acts/ad-rutan-1-rudder-travel-modification/documents"}}