What was found
IAH - FLT 0010 - THE NR 3 ENGINE N2 EXCEEDED LIMITS AND BOTH THE NR 1 AND NR 2 ENGINE EGT'S ROSE TO 980 DEGREES ON ROTATION LEAVING IAH. ALL ENGINE THROTTLES WERE RETARDED WITH THE NR 1 AND NR 2 EGT'S DROPPING BELOW RED LINE AND THE NR 3 ENGINE N2 RETURNING TO WITHIN LIMITS. THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. THE NR 3 ENGINE WAS REMOVED AND REPLACED. BOTH THE NR 1 AND NR 2 ENGINES UNDERWENT A BORESCOPE, A VSV/VBV RIG CHECK, AND POWER ASSURANCE RUN WITH NO FAULTS FOUND. THE SDR WILL REMAIN OPEN FOR PART INFORMATION PENDING INVESTIGATION INTO NR 3 ENGINE FAILURE. SUPPLEMENT - INVESTIGATION DID NOT REVEAL ANY CAUSE FOR THE NR 3 ENGINE N2 OVERSPEED. (X)