As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, CREW NOTICED ENGINE OIL ON LT WING. MAINTENANCE LOCATED OIL LEAK AT NR 1 ENGINE OIL SCAVENGE PUMP HOUSING AND REPLACED SAME. REMOVED HOUSING VERIFIED TO HAVE CAVITATION CAVITY THROUGH WALL OF SCAVENGE PUMP BODY THAT WAS ALLOWING OIL TO ESCAPE THE INTERNAL CAVITY. THIS IS THE SECOND SUCH FAILURE SEEN ON THIS PART NUMBER HOUSING.