What was found
ETOPS SIGNIFICANT SYSTEM, FOUND NR 1 ENGINE LEAKING OIL ON ETOPS CHECK. T/S ENG OIL LEAK PER FIM 71-05-00, FOUND OIL LEAKING FROM FUEL/OIL COOLER BYPASS VLV SOLENOID. REMOVED AND REPLACED "O RINGS" ON BYPASS VALVE SOLENOID PER AMM 79-21-03, LEAK CHK GOOD ON GRD ENG RUN, SERVICED ENG OIL TO FULL.