As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE THE NR 3 ENGINE OIL QUANTITY BEGAN TO DECREASE. THE ENGINE WAS SHUTDOWN, AND ALL INDICATIONS WERE NORMAL. A LEAK WAS FOUND AT THE LOW OIL PRESSURE SWITCH AND THE UNION BELOW THE SWITCH. THE SWITCH AND PACKINGS AT THE UNION WERE REPLACED, AND THE ENGINE LEAK CHECKED GOOD.