{"id":"F2006B03864","name":"AD/BEECH 35/68 - Ruddervator Differential Tail Control Rod Assembly","slug":"ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43473,"registerId":"commonwealth-F2006B03864-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/68 - Ruddervator Differential Tail Control Rod Assembly","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 35 (Bonanza) Series Aeroplanes\n\nAD/BEECH 35/68 Ruddervator Differential Tail Control Rod Assembly\n\n  \n8/97\n\nApplicability: Models 35, 35R, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35,\n\nP35, S35, V35, V35TC, V35A, V35A-TC, V35B, and V35B-TC aircraft with serial numbers D-1 through D-10403, D-15001, and D-15002.\n\nRequirement: Inspect the ruddervator differential tail control rod assembly for cracks and corrosion in accordance with the Accomplishment Instructions section of Raytheon Mandatory Service Bulletin (MSB) 2668 , or Raytheon MSB 2668 Revision 1.\n\nRepair or replace any corroded or cracked part as specified in and in accordance with the Service Bulletins referenced above.\n\nApply anti-corrosion sealant to the ruddervator control pushrods in accordance with the Accomplishment Instructions section of Raytheon MSB 2668, or Raytheon MSB 2668 Revision 1.\n\nNote: FAA AD 97-06-11 Amdt 39-9968 refers.\n\nCompliance: Unless already accomplished, within 100 hours time in service after 17 July 1997.\n\nThis airworthiness directive becomes effective on 17 July 1997.\n\nBackground: The FAA received a report of a split in the ruddervator control push rod that was found during a routine inspection. The split occurred when water froze in the internal area of the control push rod, and then expanded. Failure of the differential tail control rod assembly could result in loss of control of the aircraft.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific safety defect in a specific aircraft component. ADs are inherently limited to particular airworthiness issues and do not expand in scope over time; they remain focused on the original safety concern identified."},"complexity_factors":["Single, specific mechanical component addressed (ruddervator differential tail control rod assembly)","Only one primary requirement with three clear sub-tasks (inspect, repair/replace, seal)","No defined terms section or complex interpretation provisions","Simple applicability criteria based on aircraft model and serial number","Single compliance deadline (100 hours time in service)","No nested exceptions, conditional logic, or cross-references to other legislation beyond the referenced Service Bulletin","Background explanation provided in plain language"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified Beechcraft Bonanza 35-series aircraft to inspect the ruddervator differential tail control rod assembly for cracks and corrosion, repair or replace any damaged parts, and apply anti‑corrosion sealant. Compliance was required within 100 flight hours after 17 July 1997.\n\nThe action addresses water ingress and freezing that can split the rod; failure could cause loss of pitch/yaw control and a crash, so the inspections and fixes are mandatory."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive applies only to the listed Beechcraft 35‑series models and serial numbers and requires inspections, repairs and sealant application per Raytheon MSB 2668 (or Revision 1). It follows the FAA report and AD referenced and does not expand applicability or duties beyond the stated aircraft list and the manufacturer’s service bulletin instructions."},"complexity_factors":["Multiple affected models and specific serial‑number ranges increase identification and fleet management effort (Applicability).","Mandates inspection, repair/replace, and application of anti‑corrosion sealant, requiring access to airframe parts and skilled maintenance (Requirement).","Dependence on external technical documents — Raytheon MSB 2668 or Revision 1 — creates a dependency on manufacturer's procedures and possible interpretation issues.","Short, fixed compliance window (within 100 hours after 17 July 1997) imposes scheduling and operational disruption for operators (Compliance).","Cross‑reference to FAA AD 97‑06‑11 increases regulatory tracing for international operators and maintenance records."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Beechcraft 35‑series aeroplanes (listed serial-number ranges) to inspect the ruddervator differential tail control rod assembly for cracks and corrosion, repair or replace any defective parts, and apply anti‑corrosion sealant in accordance with Raytheon MSB 2668 (or Revision 1). It must be completed within 100 hours time‑in‑service after 17 July 1997. The action responds to a reported pushrod split caused by water freezing inside the component; owners pay for inspections, repairs and any parts."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly","history":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly/history","analysis":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly/analysis","conflicts":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly/conflicts","importantCases":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly/important-cases","documents":"/api/acts/ad-beech-35-68-ruddervator-differential-tail-control-rod-assembly/documents"}}