As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT ON DESCENT THE FLAPS WOULD NOT EXTEND. THE AIRCRAFT ACCOMPLISHED AN EMERGENCY DESCENT AND LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT FLAP TRANSMISSION BRAKE TO HAVE FAILED. THE AFFECTED FLAP BRAKE WAS REMOVED AND REPLACED, THE SYSTEM OPERATIONALLY CHECKED, AND THE AIRCRAFT RETURNED TO SERVICE.