What was found
INSPECTION TYPE:N/A CLIMBING THROUGH FL360 THE NR 4 ENGINE FLAMED OUT. DESCENDED TO FL220 AFTER ACCOMPLISHING THE IN FLIGHT ENGINE FLAMEOUT CHECKLIST TO ATTEMPT A RESTART. FOLLOWED THE IN FLIGHT ENGINE START CHECKLIST AND ATTEMPTED 1 RESTART. AFTER DRY MOTORING ENG FOR SEVERAL MINS OPS CHECK OF IGNITION SYS COMPLETED WITH NO FAULTS NOTED. ENG WAS RUN SEVERAL TIMES USING A AND B IGNITION SEPARATELY WITH NO FAULTS NOTED. AFTER FURTHER REVIEW OF EVENT REPORT 18355, IT WAS NOTED THE NR 4 BOOST PUMP WAS OFF. UNABLE TO DUPLICATE.