As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL SERVICED NR 1 ENGINE WITH 3 QUARTS OF OIL. INSPECTED NR 1 ENGINE AND FOUND OIL LEAKING FROM UNDER COWLING. RAN THE NR 1 ENGINE AND PERFORMED LEAK CHECK AND FOUND OIL LEAKING FROM AIR OIL HEAT EXCHANGER LINE. REMOVED AND REPLACED AIR-OIL HEAT EXCHANGER TUBE OIL IAW AMM 79-21-51-400-803-A. LEAK AND OPS CHECK GOOD. OK FOR SERVICE.