What was found
IAH - FLIGHT 2384, AFTER GEAR RETRACTION THE CREW REPORTED THAT THE NOSE LANDING GEAR DOORS REMAINED OPEN. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NLG DOOR SEQUENCE PROX SWITCH, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.