As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXIING OUT, FLIGHT CREW NOTED RIGHT OUTBOARD AILERON FAILED CONTROL TEST. FLIGHT CREW ELECTED TO RETURN TO GATE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE CREW PERFORMED AILERON TEST SEVERAL TIMES, EACH TIME SYSTEM PASSED WITH NO FAULTS NOTED. MAINTENANCE COULD NOT IDENTIFY ANY FAULT WITH FLIGHT CONTROL SYSTEM. AIRCRAFT RETURNED TO SERVICE. (X)