As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING CLIMB, AT 22,000 FEET, LOST AILERON CONTROL AND THE CONTROL WAS LOCKED. WITH EXCESSIVE FORCE, THE CREW FREED THE AILERON CONTROL. THE CREW RETURNED TO KSDF AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE AILERON SERVO MOTOR. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED AT THAT TIME.