As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, THE NR 4 ENGINE ROLLED BACK TO IDLE WITH AUTO THROTTLE ON. CREW DECLARED AN EMERGENCY AS PRECAUTION AND MADE A THREE-ENGINE LANDING WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE FUEL FLOW PUMP AND FUEL CONTROL. PERFORMED LEAK AND OPERATIONAL CHECKS. CHECKS WERE NORMAL AND AIRCRAFT RETURNED TO SERVICE. PART TOTAL CYCLES, 9,858.