What was found
INSPECTION TYPE:N/A DURING CLIMBOUT, THE NR 4 ENG SURGED LOUDLY AND VIOLENTLY MULTIPLY TIMES WITH VISIBLE FLAMES SHOOTING OUT OF THE INLET. YAW ASSOCIATED WITH SURGES. OIL TEMP READ OVER 135 EGT 946 OIL QUANTITY 5.3, N2, 18 PERCENT. RAN CHECKLISTS AT TOD, HAD 10 PSI OIL QTY 5.3 NR 4 EDP SELECTED TO SUPPLY OFF AT AROUND 1135 WINDMILLED FOR 17 MINUTES. LANDING UNEVENTFUL. REPLACED NR 4 ENGINE IAW TASK CARD NR 5000. ENG S/N ON 662410, ENG S/N OFF P610981.