What was found
(CAN) DURING TAKEOFF, A LOW OIL PRESSURE AND FIRE ALARMS LIGHT ON. THE PILOTS SHUTDOWN THE ENGINE AND OPENED THE FIRE EXTINGUISHER BOTTLES. THE ACFT RETURNED TO THE AIRPORT OF ORIGIN WERE AN UNEVENTFUL LANDING WAS PERFORMED. THE POST FLIGHT INSPECTION REVEALED THE PROPELLER WAS SEIZED, OIL LEAKAGE AT THE NR 6 AND 7 BEARING AREA DUE TO THE VENT AND PRESSURE TUBES WERE FRACTURED AND THE PT BLADES WERE FRACTURED.