What was found
CCS - FLT 2140 - EN ROUTE CCS/MIA - NR 1 ENGINE STRUT OVERHEAT LIGHT ILLUMINATED DURING CLIMB. WOULD NOT EXTINGUISH. AIRCRAFT RETURNED TO CCS AND LANDED WITHOUT INCIDENT. PERFORMED INSPECTION OF ALL DUCTS AT NR 1 ENGINE PYLON AND LOOP. ACCOMPLISHED ENGINE RUN-UP AT TKAEOFF POWER. COULD NOT DUPLICATE ON GROUND. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)