What was found
NR 4 ENGINE FLAME-OUT AT 31,000 FEET. PERFORMED DHL SHUTDOWN PROCEDURES. ENGINE WINDMILL FOR 40 MINUTES, ZERO OIL PRESSURE, HAD OIL QUANTITY. INSPECTED ENGINE AS PER 71-00-00 FAULT 51. TROUBLESHOT C/W NEGATIVE PRESSURE CHECK, NO DEFECTS NOTED. CHECKED FUEL PUMP OUTPUT, FOUND TO BE LOW 10 PSI. REMOVED AND REPLACED SAME.