What was found
IAH - FLIGHT 2296, THE CREW REPORTED THAT THE LANDING GEAR INDICATION WAS THREE RED UP, AND LANDING GEAR MASTER DISAGREE WITH THE LEVER IN THE DOWN POSITION, THE CREW SUCCESSFULLY LOWERED THE LANDING GEAR, AND THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR LEVER, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.