What was found
CLT - FLT 1635 - AT APPROXIMATELY 4000 FT IN CLIMB-OUT FROM CLT, CREW RECEIVED THE FOLLOWING MESSAGES ON THE MULTIFUNCTION DISPLAY, 'STAB TRIM 1 AND 2, YD 1 AND 2, RUDDER 1 AND 2'. FLT RETURNED TO CLT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE FLIGHT AUGMENTATION COMPUTER. (M)