As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AILERON TRIM RUNAWAY FULL DEFLECTION LT & RT. TRIM BUTTON WAS STICKING ON. RETURNED TO FIELD. LANDING UNEVENTFUL. R & R AILERON/RUDDER TRIM CONTROL PANEL, REF AMM TASKS 27-13-16-000-801 & 27-13-16-400-801. OPS CHECKS GOOD. RETURNED TO SERVICE.