What was found
AT CRUISE LEVEL, NR 4 ENGINE FAILED AT 1945Z THREE HOURS AFTER TAKING OFF FROM RKSI. POP SOUND CAME FROM ENGINE, N1 AND N2 WENT LOW, EGT ROSE TO 615 AND CLIMBING. CREW SHUT DOWN NR 4 ENGINE IAW QRH. CREW ATTEMPTED NR 4 ENGINE FLIGHT START UNSUCCESSFULLY, HAD FUEL FLOW, IGNITION, AND EGT, BUT N1 AND N2 REMAINED LOW. CREW TERMINATED FLIGHT, DIVERTED TO RKPK AND LANDED SAFELY AT RKPK.