What was found
DURING LANDING ROLL, ALL HYDRAULIC BRAKING ACTION WAS LOST. THE CREW INITIATED THE EMERGENCY BRAKING SYSTEM AND MAXIMUM REVERSE THRUST TO DECELERATE THE AIRCRAFT. MAINTENANCE INSPECTED THE AIRCRAFT ANTI-SKID SYSTEM AND REPLACED THE ANTI-SKID CONTROL BOX. AN OPERATIONAL CHECK WAS ALSO ACCOMPLISHED ON THE AIRBRAKE SYSTEM IN ACCORDANCE WITH THE MAINTENANCE MANUAL AND THE AIRCRAFT WAS RETURNED TO SERVICE.