As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOTS SHUT DOWN NR 1 ENGINE, DUE TO OIL PRESSURE FLUCTUATION AND OIL PRESS. ANNUNCIATOR ILLUMINATION. ACFT RETURNED TO YXS MX BASE. OIL LOSS WAS FOUND TO BE COMING FROM THE HP PUMP DRAIN. OIL SEAL REPLACED, OIL CONSUMPTION ELIMINATED. EXPLORATORY WORK COMPLETED AS PER PRATT AND WHITNEY MX MANUAL. ACFT RELEASED AS PER PRATT AND WHITNEY MX MANUAL PUTTING IN PLACE BOTH OIL FILTER/SCREEN AND CHIP DETECTOR INSPECTIONS.