What was found
IAH - FLT 4373 - THE CREW REPORTED A LANDING GEAR NOT DOWN INDICATION, DURING TAXI AND FLIGHT, THE CREW LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RIGHT NLG DOWNLOCK SWITCH IAW ATR 42-320 MM 32-61-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)