What was found
DURING TAKEOFF ON FLIGHT 3669, NR 4 ENGINE OVERHEAT LIGHT ILLUMINATED IN FLIGHT. MAINTENANCE COMPLETED INSPECTION OF ENGINE NR 4, 1 & 2 FOR FIRE INDICATION. NO DEFECTS NOTED. INSPECTED NR 4 ENGINE FIRE LOOPS A & B. NO INDICATIONS NOTED. FIRE BOTTLE WAS NOT DISCHARGED. SUSPECT FUEL MAINFOLD LEAKING. COMPLETED TASK CARD 7310-501. REPLACED BOTH FUEL MANIFOLDS. LT FUEL MANIFOLD P/N 2-163-620-38, S/N OFF 13-714, RT FUEL MANIFOLD P/N 2-163-620-37, S/N OFF 1XM02556. LEAK AND OPS CHECK GOOD.