As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT NUMBER 10647 LEG 4 PIE-SFB. WHILE ON APPROACH TO SFB, CREW REPORTED THE LEFT ENGINE NH STARTED TO SPOOL DOWN. THE LEFT NP STARTED TO DECREASE WHILE THE TQ STARTED TO INCREASE. CREW FEATHERED LEFT PROPELLER AND SHUT DOWN THE LEFT ENGINE AS PRECAUTIONARY ACTION. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT FUEL MOTIVE FLOW VALVE WAS INOPERATIVE. MOTIVE FLOW VALVE WAS REPLACED, ENGINE OPERATIONAL CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE.