What was found
(CAN) ENROUTE, CLIMBING OUT OF FL290 THE RUDDER BEGAN KICKING TO THE RT AND LT. YD NR 2 TRIPPED OFF. DIVERTED, CONDITION CONTINUED TO LANDING. NO CHANGE WITH AUTO-PILOT ON OR OFF, COULD FEEL THE RUDDER BUMPING IN THE PEDALS ALL THE WAY TO LANDING. MAINTENANCE INTERROGATED MDC/FCC DIAGNOSTICS AND FOUND CURRENT REPAIR CODES OF 003400/008200. MAINTENANCE REPLACED BOTH FCC CARDS AND NR 2 YAW DAMPER LINER ACTUATOR.