What was found
FLT 3921 - LEFT THRUST LEVER WOULD NOT RETURN TO FLIGHT IDLE. REPLACED LEFT ENGINE THROTTLE CONTROL CABLE IAW MM 76-11-09 AND REPLACED LEFT ENGINE THROTTLE GEARBOX IAW 76-11-17.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 3921 - LEFT THRUST LEVER WOULD NOT RETURN TO FLIGHT IDLE. REPLACED LEFT ENGINE THROTTLE CONTROL CABLE IAW MM 76-11-09 AND REPLACED LEFT ENGINE THROTTLE GEARBOX IAW 76-11-17.