What was found
NR 1 ENGINE STRUT OVERHEAT LIGHT CAME ON AT 6000' DURING CLIMB, RAN QRH PROCEDURE AND WERE ABLE TO MAKE THE LIGHT GO OUT WITH REDUCING POWER. ADVANCING POWER CAUSED THE LIGHT TO COME ON AGAIN. REDUCED NR 1 ENGINE TO IDLE POWER AND RETURN TO MEMPHIS. MEM R AT HIGH PWR SETTING FOUND 8TH STAGE AIR DUCT BLOWING AIR TOWARDS SENSOR LOOP. REPLACED DUCT AND REPOSITIONED CLAMPS. RAN ENG PER JRH, REINSTALLED PANELS AND OPS GOOD.