What was found
AIRCRAFT WAS GROUNDED: AT APPROXIMATELY THE 3 HOUR MARK IN-FLIGHT RUDDER KICKED WITH #1 AUTO PILOT ENGAGED. CREW DISENGAGED AUTO PILOT 1 AND ENGAGED AUTO PILOT 2 WITH NO FURTHER ISSUES. MAINTENANCE REPLACED THE #1 FLIGHT AUGMENTATION COMPUTER (AALA202209143521) AND THE #2 FLIGHT AUGMENTATION COMPUTER (AALA202209140162) PER AMM 22-66-34. MAINTENANCE ALSO REPLACED THE RUDDER TRIM ACTUATOR (AALA202209148114)AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 27-22-51.