As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT LANDING PILOT NOTICED OIL PRESSURE LOW. DURING TAXI, PILOT SHUT ENGINE DOWN. MAINTENANCE FOUND ENGINE WOULD NOT TURN BY PROP MOVEMENT. ENGINE WAS REMOVED AND SENT FOR TEARDOWN INSPECTION. THIS INSPECTION REVEALED THAT TORSION SHAFT HAD SEIZED DUE TO SCAVANGE PUMP FAILURE.