What was found
DURING APPROACH, NOSE LANDING GEAR UNSAFE LIGHT ILLUMINATED AFTER GEAR EXTENSION. CREW CYCLED GEAR WITH SAME RESULTS. GEAR WAS VISUALLY CONFIRMED DOWN AND LOCKED THROUGH PEEP HOLE. EMERGENCY EQUIPMENT WAS CALLED OUT ON STANDBY AS A PRECAUTION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NOSE GEAR PROXIMITY SENSOR BROKEN. REPLACED SENSOR, OPERATIONAL CHECK NORMAL.