As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON DESCENT, NR 1 ENGINE TORQUE DROPPED BY 200 LBS. WHEN THE PILOT RETARDED THE POWER LEVER THE TORQUE DROPPED OFF ANOTHER 2000 LBS AND THE LOW OIL PRESSURE LIGHT ILLUMINATED. THE PILOT SHUTDOWN THE ENGINE AND CONTINUED THE APPROACH AND LANDING WITHOUT INCIDENT. INITIAL INVESTIGATION FOUND METAL PARTICLES ON THE CHIP DETECTOR AND IN THE OIL FILTER. ENGINE TSO APPROXIMATELY 4,400 HOURS.