What was found
(CAN) ON FIRST START OF THE DAY, THE NR 1 ENGINE OVERTORQUED TO AN UNDETERMINED VALUE. TORQUE WAS SEEN TO BE DECREASING THROUGH 70 PERCENT. IT WENT BACK TO 30 PERCENT AND THEN STARTED TO ACCELERATE AGAIN. ENGINE WAS SHUTDOWN AT 50 PERCENT TORQUE. FDR DOWNLOADED AND READ MAX TQ EXPERIENCED ON FDR READING IS 69 PERCENTS. TROUBLESHOOTING FOUND THE NR 2 TORQUE PROBE TO BE AT FAULT. TORQUE PROBE REPLACED ON NR1 ENGINE. GROUND RUNS COMPLETED, CHECKED SERVICEABLE.