What was found
MEM - FLIGHT 2249, DURING DESCENT THE CREW REPORTED THAT AUTO PRESSURIZATION FAILED. THE AIRCRAFT LANDED AT MEM WITHOUT INCIDENT WHERE THE CREW PLACED THE AUTO PRESSURIZATION ON MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT LANDED AT IAH WHERE MAINTENANCE REMOVED AND REPLACED THE DIGITAL PRESSURIZATION CONTROLLER, OPERATIONALLY TESTED WITH NO DEFECTS, REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.