As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH 8000 FEET, MASTER CAUTION ILLUMINATED. ENGINE NR 1 OIL QUANTITY WAS ZERO AND OIL PRESSURE LIGHT WAS ILLUMINATED. ENGINE NR 1 WAS SHUTDOWN. FLIGHT CREW RETURNED AIRCRAFT TO DEPARTURE AIRPORT PERFORMING AN UNEVENTFUL LANDING. MAINTENANCE REPLACED NR 1 ENGINE.