What was found
DURING TAKEOFF EGT`S WERE PEAK 934,908,908,913 ON ENG`S ONE THRU FOUR. AUTO THROTTLES WERE ON. AFTER REDUCTION TO CLIMB POWER, PASSING THRU 1800`, IN LEFT TURN WE HEARD A LOUD BANG ACCOMPANIED WITH AN AIRCRAFT SHUDDER. NOTICED NR 3 N1 ROLLING BACK WITH N2 ROLLING BACK. NOTICED EGT DECREASING THRU 930 C. EGT GAGE OVERTEMP NEEDLE STOPPED AT 955 C. SHUTDOWN NR 3 ENGINE. DECLARED AN EMERGENCY, DUMPED FUEL TO GW OF 630,000. RETURNED TO DEPARTURE FOR UNEVENTFUL LANDING ON RWY 36. FUEL DUMPED. REMOVED AND REPLACED ENGINE IAW WITH EIA WORK CARD F7201-CF6. (K)