As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL QTY DROPPING, PRESS AND TEMP GOOD DIVERTED TO LHR. LANDING UNEVENTFUL, ENGINE NOT SHUTDOWN. FOUND OIL PUMP LINE LEAKING IN THE FLEX PORTION. NOT A 'B' NUT LEAK REF IPC 79-21-05-05 NR 36. FOUND LEAK ON MAIN OIL SUPPLY TUBE BETWEEN OIL FILTER AND OIL PUMP-LEAKING FROM FLEXIBLE SECTION. SUPPLY TUBE REMOVED. REFITTED NEW SUPPLY TUBE SERVICED OIL TO FULL. LEAK CHECKED ENGINE, OK NO LEAKS.