What was found
(CAN) DURING APPROACH, THE FLIGHT CREW NOTICED A HIGHER THAN USUAL T5 INDICATION THAT LIMITED THE NR 2 ENGINE TORQUE. THE ACFT LANDED WITHOUT INCIDENT. A 5" X 3" PIECE OF SHEET METAL FOUND IN THE ENGINE INLET COMPARTMENT. AREA INSPECTED AS WAS DISCOVERED THAT THE PIECE OF SHEET METAL HAD COME OFF THE SNOW SHIELD AND BLOCKED THE COMPRESSOR INLET. NO ENGINE DAMAGE OR ANY FURTHER DAMAGE NOTED. SNOW SHIELD REPLACED. ACFT POWER CHECKS CARRIED OUT, SATISFACTORY.