As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE ROLL BACK TO 93.5 PERCENT N1 AT FLIGHT LEVEL 310. EGT AT 641 DEGREES, N2 AT 94.5 PERCENT AND FUEL FLOW AT 5648. AFTER LANDING NO RESPONSE FROM THROTTLE LEVER. DUMPED 140,000 LBS FUEL. AIRCRAFT EN ROUTE ZSPD TO PANC, DIVERTED TO RKSI. NR 4 ENGINE WAS NOT SHUTDOWN. CLEANED CDP LINE IN ACCORDANCE WITH AMM 71-00-42. ACCOMPLISHED HIGH POWER RUN IN ACCORDANCE WITH 71-00-00, TEST NR 4. OPERATIONAL CHECK NORMAL.