What was found
ON FLT 748 - FPO-CVG - TAKEOFF ROLL, NR 2 ENGINE STALLED DURING ACCELERATION THROUGH 70 KTS. PARAMETERS WERE OBSERVED TO RECOVER TO NORMAL. HOWEVER, NR 2 ENGINE ACCESS DOOR LIGHT ILLUMINATED, TAKEOFF ABORTED. REMOVED AND REPLACED NR 2 PRBC VALVE, OPERATION CHECKED NORMAL IAW MM 75-31-11. AIRCRAFT RETURNED TO NORMAL SERVICE. (M)