What was found
EN ROUTE FROM LAX TO PDX, THE NUMBER THREE ENGINE FLAMED OUT DURING CLIMB. THE FLIGHT CREW FOLLOWED COMPANY PROCEDURE AND PERFORMED A SUCCESSFUL RESTART AFTER TRANSFERRING TO AN ALTERNATE FUEL SOURCE. THE FLIGHT CONTINUED TO PDX FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE ENGINE IN ACCORDANCE WITH THE CFMI MAINTENANCE MANUAL WITH NO DISCREPANCY NOTED. MAINTENANCE REPLACED THE MAIN ENGINE FUEL FILTER AS PRECAUTIONARY, PERFORMED POWER ASSURANCE CHECKS IN ACCORDANCE WITH THE COMPANY ENGINE RUN HANDBOOK WITH NO DISCREPANCIES NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.