What was found
IAH - FLIGHT 3485, ON GO-AROUND, THE CREW REPORTED THAT THE LEFT GEAR WOULD NOT RETRACT. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE INSPECTED THE AIRCRAFT, AND PERFORMED OPERATIONAL CHECKS OF THE LANDING GEAR EXTENSION/RETRACTION SYSTEM WITH NO DEFECTS NOTED. THE AIRCRAFT WAS THEN APPROVED FOR RETURN TO SERVICE.