As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED A FLAP AYMMETRY AND CONTROL FAULT AFTER TAKEOFF. THEY ELECTED AN AIR TURN BACK AND MADE AN UNEVENTFUL LANDING. MAINTENANCE REMOVED AND REPLACED FCU AND RT OUTBOARD FLAP ACTUATOR. OPS CHECK WAS GOOD. REFERENCE GLBA96071.