As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH CREW REPORTED UPON LOWERING FLAPS FOR LANDING, RECEIVED FLAP SLAT ASYMMETRY MESSAGE & FLAPS DID NOT DEPLOY CORRECTLY. EMERGENCY DECLARED FLIGHT LANDED IAH WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED NR 3 FLAP SKEW SENSOR. SYSTEM GND CHECKED NORMAL OPERATION CLOSED.