As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THRU FL140, LT ENG OBSERVED MOMENTARY OVERSPEED OF N1. NORM ENG INDICATIONS OBSERVED. UPON DECENT LEFT ENGINE THRUST LEVER STUCK AND UNABLE TO REDUCE N1 BELOW 81 PERCENT. COMPLIED WITH QRH, THRUST LEVER JAM PROCEDURE AND SHUTDOWN LEFT ENGINE INFLIGHT. COMPLIED WITH SINGLE ENGINE PROCEDURE QRH AND PERFORMED SINGLE ENGINE, FLAPS 20 LANDING. NOTED DAMAGE TO LT ENGINE. ON POST FLIGHT WALK AROUND NOTED LEFT ENGINE UPPER COWLING DAMAGE. OPEN