As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN ROUTE TO KPDX, THE FLIGHT CREW REPORTED LEFT ENGINE TORQUE AND N1 INDICATIONS DROPPED. CHECKLIST ITEMS WERE FOLLOWED AND THE LEFT ENGINE WAS SHUT DOWN. THE CREW DECLARED AN EMERGENCY AND THE AIRCRAFT DIVERTED TO KDLS AND LANDED WITHOUT INCIDENT. PDX MAINTENANCE TRAVELED TO KDLS. REMOVED AND REPLACED LT ENGINE FCU WITH SERVICEABLE UNIT, PER P&W PT6A-65 EMM 73-20-00 PARA 5A&B. OPERATIONAL AND LEAK CHECK NORMAL.