As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT ON LAST FLIGHT OF DAY, ENGINE TORQUE BEGAN TO DROP OFF. THIS CAUSED THE ACFT TO YAW TO THE RT. ACFT LANDED WITHOUT INCIDENT. MX INSPECTED THE ENGINE AND DETERMINED THAT A COMPRESSOR TURBINE SHROUD SEGMENT HAD BECOME DISLODGED FROM THE SHROUD ASSY AND CONTACTED THE COMPRESSOR TURBINE. THE ENGINE WAS REPLACED.