As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4391 THE CREW REPORTED AN UNCOMMANDED ROLL TO THE RIGHT AFTER TAKEOFF. THE FLAPS WERE AT 9 DEGREES. THE CREW RETURNED TO ORD AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND AILERON CONTROL CABLES BELOW SPECIFICATION. ADJUSTED THE WING AND FUSELAGE SECTORS OF THE AILERON CONTROL SYSTEM IAW EMB-145 AMM 27-11-01. THE AIRCRAFT WAS RETURNED TO SERVICE.