As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE THE LEFT THRUST LEVER WAS STUCK AT TAKEOFF POWER AND WOULD NOT COME BACK. THE N1 WAS SET AT T/O POWER FOR ABOUT 25 MINUTES. AFTER APPROX 20 MINUTES, GOT IT TO COME BACK TO CRUISE POWER. EMERGENCY DECLARED. FLT 4534 DEL 20 MINS.