As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT 2000 FT ON FINAL, AUTOPILOT OFF, MADE LT WING DOWN AILERON TRIM INPUT. AILERON TRIM CONTINUED TOWARDS FULL LT WING DOWN. HIT RT WING DOWN SIDE OF SWITCH, MOVEMENT STOPPED, THEN TRIMMED BACK TO LEVEL FLIGHT. WAS NOT ABLE TO NOTICE IF ROCKER SWITCH PHYSICALLY STAYED DOWN, DID NOT SEEM SO. MAINTENANCE COULD NOT DUPLICATE. REPLACED AILERON/RUDDER TRIM CONTROL PANEL.