As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE SURGED PLUS TO MINUS 3 PERCENT N1 DURING CLIMB TO ALTITUDE. EGT, N2, FF SURGED AS WELL. AUTOTHROTTLES WERE IN USE. THRUST LEVER DID NOT FOLLOW ENGINE SURGE ALSO NR 1 THRUST LEVER 1 KNOB WIDTH PAST NR 2 DURING CLIMB. OK IN CRUISE AND DESCENT. REMOVED AND REPLACED THE #1 ENGINE ASSEMBLY PER J/C 03L50671001.