As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG EPR SPIKED TO 2.5 EPR FOR 1 SECOND DURING TAKEOFF, EPR THEN DECREASED TO APPROX 1.80 EPR ON CLIMB THRUST. ALL ENGINE GAUGES WERE THEN STEADY AT CLIMB THRUST. AFTER CLIMBOUT, THRUST LEVER MOVEMENT WOULD NOT CHANGE THRUST. REMOVED AND REPLACED NR 1 ENGINE FCU AND ENGINE DRIVEN FUEL PUMP, OPS CHECK OK.