What was found
DURING CRUISE, THE NR 2 ENGINE FIRE PANEL LIGHT BEGAN TO FLICKER ON. REDUCED POWER AND CHECKED ALL ENGINE INSTRUMENTS WITH NO ABNORMALITIES NOTED. AFTER A FEW MINUTES, THE ENGINE FIRE LIGHT CAME ON STEADY. THE PILOT SHUT THE ENGINE DOWN AND AFTER A FEW MINUTES, THE LIGHT WENT OUT. THE AIRCRAFT MADE AN UNEVENTFUL LANDING. MAINTENANCE INSPECTION REVEALED A CHAFED WIRE FROM THE ENGINE FIRE DETECTOR PROBE.