What was found
AIRCRAFT WAS ON APPROACH, THE GEAR WAS SELECTED DOWN. THE MAIN GEARS INDICATED DOWN AND LOCKED. NOSE LANDING GEAR INDICATE IN TRANSIT. THE GEAR WAS CYCLED AND THE NOSE LANDING GEAR TRANSIT LIGHT REMAINED ON. THE AIRCRAFT RETURNED TO AIRPORT, DECLARED AN EMERGENCY. THE NOSE UNSAFE LIGHT REMAINED ON. DURING TOUCHDOWN THE NOSE (IN TRANSIT) LIGHT EXTINGUISHED AND THE GREEN (DOWN LOCKED) LIGHT ILLUMINATED. THE AIRCRAFT WAS FERRIED FOR INSPECTION. ADJUSTED AND RIGGED NOSE LANDING GEAR DOWNLOCK SWITCH ASSEMBLY. PERFORMED GEAR SWING AND NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.