{"id":"F2006B04101","name":"AD/BEECH 60/40 Amdt 2 - Rudder Pedal Arms","slug":"ad-beech-60-40-amdt-2-rudder-pedal-arms","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43780,"registerId":"commonwealth-F2006B04101-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 60/40 Amdt 2 - Rudder Pedal Arms","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 60 (Duke) Series Aeroplanes\n\nAD/BEECH 60/40\n\nAmdt 2\n\n  \nRudder Pedal Arms 4/95\n\nApplicability: All models fitted with rudder pedal arms P/N 50-524326, all dash numbers.\n\nRequirement: Inspect the upper portion of each rudder pedal arm for cracks, using the fluorescent dye penetrant method in accordance with CAO 108.10. The area to be inspected includes the upper part of the ‘I’ section shank, the hollow crossbar and the brake pedal attachment lugs. Particular attention must be paid to the fillet radii and holes.\n\nCompliance: 1. Initially inspect before the issue of the next maintenance release after 31 October 1987. Re-inspect at intervals not to exceed 12 months.\n\n2. Inspect before flight if the aircraft has been parked for more than 3 months with the rudder pedals locked.\n\nNote: The Maintenance Manual prohibits towing with the rudder pedals locked. This practice may also cause premature cracking.\n\nBackground: A review of cracked rudder pedals suggests that the primary cause of cracking is wind loads when the aircraft is parked on the ground with the rudder pedals locked, normal operating loads being a secondary factor. The inspection interval is now based on calendar time, special provision is made for aircraft parked in the open for long periods and a warning has been added about correct towing practice.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2117},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment expanded the original directive's scope by converting inspection intervals to calendar time (replacing previous intervals), adding a new mandatory pre-flight inspection condition for aircraft parked long-term with locked rudder pedals, and incorporating operational guidance regarding towing practices."},"complexity_factors":["References external technical standard (CAO 108.10) for inspection methodology","Specific aerospace part number limitation (P/N 50-524326)","Multiple compliance triggers (initial historical date, recurring 12-month intervals, and conditional pre-flight requirement)","Technical terminology requiring aviation engineering knowledge (fluorescent dye penetrant, fillet radii)"],"plain_english_summary":"This safety order requires owners/operators of Beechcraft 60 (Duke) aircraft fitted with rudder pedal arms P/N 50-524326 to inspect those arms for cracks using fluorescent dye-penetrant inspection to prevent in‑flight failure. Inspections must be done by the next maintenance release after 31 Oct 1987, repeated annually, and performed before flight if the aircraft was parked over three months with the pedals locked. Cracking—often from wind or towing with pedals locked—can cause pedal separation and loss of directional control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms","history":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms/history","analysis":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms/analysis","conflicts":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms/conflicts","importantCases":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms/important-cases","documents":"/api/acts/ad-beech-60-40-amdt-2-rudder-pedal-arms/documents"}}