What was found
IAH - FLIGHT 2164, THE CREW REPORTED A LANDING GEAR AIR/DRND FAILURE AFTER T/O, AND THAT THE GEAR WOULD NOT RETRACT. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE WEIGHT ON WHEELS CONNECTOR ON THE NOSE LANDING GEAR PROXIMITY SWITCH, OPERATIONALLY CHECKED WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.