As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3454 - THE CREW REPORTED A FLAP ASYMMETRY IN FLIGHT. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE FLAP CONTROL UNIT, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)