What was found
THE NOSE GEAR RED UNSAFE LIGHT ILLUMINATED WHILE EN ROUTE. THE LANDING GEAR LEVER WAS PLACED TO UP THEN OFF AGAIN, BUT THE LIGHT REMAINED ILLUMINATED. THE LIGHT EXTINGUISHED DURING DESCENT WITHOUT FURTHER ACTION. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE M983 LANDING GEAR LOGIC CARD AT FAULT. THE M983 LOGIC CARD WAS REPLACED. IN ADDITION, THE NOSE GEAR LOCK TARGET GAP WAS RESHIMMED, OPERATION AND INDICATIONS CHECKED NORMAL.