As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK, ENGINE SHUTDOWN, EMERGENCY DECLARED. NR 1 ENGINE EICAS SHOWED LOW OIL PRESS WITH ASSOCIATED OIL PRESSURE LIGHT AND 0 OIL QUANTITY. REINSTALLED OIL CAP, CHECKED CHIP DETECTORS, INSPECTED AND REPLACED PRESSURE AND SCAVENGE FILTERS. ACCOMPLISHED POWER RUN AND REINSPECTED DETECTORS AND FILTERS, NO DEFECT.