As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE LOST POWER AFTER TAKEOFF, POWER RETARDED ITSELF TO 80 PERCENT N1. AIRCRAFT DUMPED FUEL AND RETURNED TO GATE. CHANGED FFR TO CORRECT PROBLEM AND CHANGED FUEL PUMP AS A PRECAUTIONARY MEASURE. ACCOMPLISHED NORMAL ENGINE RUN AND RETURNED AIRCRAFT TO SERVICE.