What was found
THE AIRCRAFT WAS ON APPROACH INTO AIRPORT, AT LANDING GEAR EXTENSION SPEED THEY SELECTED GEAR DOWN WITH A RESULT OF THE NOSE GEAR TRANSITION LIGHT STAYED ILLUMINATED WITHOUT A GREEN NOSE GEAR DOWN AND LOCKED LIGHT ILLUMINATION. THE CREW FOLLOWED EMERGENCY PROCEDURES FOR THIS GEAR UNSAFE CONDITION WITH THE SAME RESULTS, NOSE GEAR TRANSITION LIGHT STAYED ILLUMINATED AND NOSE GEAR DOWN AND LOCKED LIGHT DID NOT ILLUMINATE. THE AIRCRAFT LANDED SAFELY WITH OUT INCIDENT. THE NOSE GEAR DISCREPANCY WAS TROUBLESHOT TO THE GEAR POSITION SWITCH THAT IS INTEGRAL TO THE NOSE GEAR ACTUATOR TO BE DEFECTIVE. THE NOSE GEAR ACTUATOR WAS REPLACED WITH A SERVICEABLE UNIT, LANDING SWINGS COMPLIED WITH, EMERGENCY GEAR EXTENSION CHECK COMPLIED WITH, AND THE EMERGENCY GEAR EXTENSION SYSTEM COMPLIED WITH A FINAL SERVICE WITH NITROGEN. AIRCRAFT WAS RELEASED FOR SERVICE.