What was found
DURING CRUISE, THE NR 3 ENGINE LOW OIL PRESSURE LIGHT ILLUMINATED, OIL QUANTITY WENT TO ZERO AND THE ENGINE WAS SHUTDOWN. THE AIRCRAFT DIVERTED TO BOS WHERE AN UNEVENTFUL TWO ENGINE LANDING WAS ACCOMPLISHED, NO FUEL WAS DUMPED. THE DE-OILER SHAFT WAS FOUND SHEARED AND THE AIRCRAFT WAS FERRIED TO MSP WHERE THE ENGINE WAS REPLACED.