What was found
(CAN) NR 1 ENGINE SHUT DOWN AFTER LANDING DUE TO LOW OIL PRESSURE QUANTITY. MAINTENANCE FOUND THAT THE TURBINE SECTION REAR BEARING SCAVENGE PUMP WAS DAMAGED AND LEAKING. THE ENGINE TURBINE HAD SHIFTED BACK AND DAMAGED THE PUMP. IT IS SUSPECTED THE COMPRESSOR SECTION NR 2 BEARING HAD FAILED. OVERHAUL FACILITY CONFIRMED THAT COMPRESSOR ROTOR BEARING HAD FAILED ALLOWING THE COMPRESSOR ROTOR TO SHIFT FORWARD CONTACTING THE STATOR VALVE AIRSEALS AND INNER BAND.