What was found
(CAN) DURING DESCENT, THE FLIGHT CREW NOTICED THAT THE TORQUE INDICATION OF NO.1 ENGINE HAD DECREASED TO 0 FOOT-POUNDS, AND THE PROPELLER REVOLUTIONS PER MINUTE REMAINED IN THE PROHIBITED RANGE. THE FLIGHT CREW EVALUATED THE CONDITION AS AN ENGINE ISSUE WITHOUT THE PROPELLER AUTO-FEATHERING. THEY SHUT DOWN THE ENGINE IN ACCORDANCE WITH THE STANDARD OPERATING PROCEDURES AND DECLARED AN EMERGENCY TO ATC. THE AIRCRAFT LANDED UNEVENTFULLY WITH NO. 1 ENGINE INOPERATIVE. OPEN