What was found
ENROUTE AT 3000-FT, NR 1 ENGINE FIRE LIGHT ILLUMINATED. CREW FOLLOWED EMERGENCY CHECKLIST. DECLARED EMERGENCY. SHUTDOWN NR 1 ENGINE, FIRE LIGHT REMAINED ON. EXPENDED MAIN FIRE EXTINGUISHER AND RESERVE FIRE EXTINGUISHER, FIRE LIGHT REMAINED ON. CREW COMPLETED SINGLE ENGINE LANDING. NO EVIDENCE OF FIRE. MX CLEANED MOISTURE FROM THE CONNECTORS TO BOTH FLAME DETECTORS AND THE CONNECTOR AT STA 215 AND STA 300.