What was found
ON FINAL APPROACH NR 1 ENGINE OVERHEAT LIGHT ILLUMINATED FOR ABOUT 5 SECONDS THEN WENT OUT. ALL ENGINE INDICATIONS WERE NORMAL. AIRCRAFT MADE AN UNEVENTFUL LANDING. INSPECTED ENGINE FOR LEAKS, INSPECTED LOOPS, WIRING AND CONNECTORS, NO ABNORMALITIES NOTED. REPLACED ENGINE OVERHEAT DETECTOR UNIT AND OPERATED NR 1 ENG PER AMM.