As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, THROTTLE RESPONSE ON ENG 1 WAS LOST WITH THROTTLES ADVANCED ENGINE WOULD NOT ADVANCE BEYOND IDLE. NO CHANGE WITH AUTOTHROTTLES ON OR OFF. INSTALLED NR 1 ENGINE EEC AS PER MM. R & R NR 1 ENG FMU PER AMM. PERFORMED OPS AND LEAK CHECK AS PER MM, ALL CHECKED GOOD.