What was found
PILOT REPORTS RUDDER BOOST TEST HAS OPPOSITE RUDDER MOVEMENT WHEN TEST IS PERFORMED. LT THROTTLE HAS RT RUDDER MOVEMENT. RT THROTTLE HAS LT RUDDER MOVEMENT. MX WAS UNABLE TO DUPLICATE THE DISCREPANCY WITH THE CREW. DURING TEST IT WAS NOTED THAT THE SYS WAS GIVING WEAK RUDDER COMMANDS. MX ACCESSED THE FLIGHT GUIDANCE COMPUTER & NOTICED A MILD BURNED PLASTIC SMELL COMING FROM THE COMPUTER. THE FLIGHT GUIDANCE COMPUTER WAS REPLACED. RUDDER BOOST FUNCTION WAS IMPROVED. ACFT WAS RETURNED TO SERVICE.