What was found
AT 1330Z INTO FLIGHT NR 4 ENG FLAMED OUT. COMPLY WITHIN FLIGHT ENGINE FAILURE/SHUTDOWN CK LIST. TRIED INFLIGHT START CK LIST AS THE ENG INDICATION WAS NORMAL WITH EXCEPTION OF NR 4 OIL TEMP BEING AROUND 100 DEG. REMOVED AND REPLACED MAIN FILTER, INSPECTED PIR, PTT2 AND PT2 LINES FOR LEAKS AND SECURITY. VERIFIED FUEL PUMP PRESSURE (700 LBS) FUEL FLOW AT START NORMAL, ENGINE A/I OPS NORMAL MM 71-00-46, 71-00-42. RAN NR 4 ENGINE TO 1.51 EPR 18.8 F/F, 95 PERCENT N1 818 EGT, NO DEFECTS.