As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM KLAX ,THE CREW SHUTDOWN NR 4 ENGINE DUE TO LOST OF OIL QUANTITY. THE CREW LANDED IN KPDX WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED NUMBER FOUR ENGINE AND FOUND THE STARTER SERVICE PLUG OFF. MAINTENANCE INSTALLED SERVICE PLUG AND SERVICED ENGINE AND STARTER. OPERATIONAL CHECK GOOD IAW ATI ERH 70.01.1. AIRCRAFT WAS RETURNED TO SERVICE.