What was found
CREW REPORTED "AUTO PILOT 2 UNAVAILABLE IN FLIGHT. TURNING FINAL APPROACH AUTO PILOT 1 DISCONNECTED. ROLL CONTROL HAD RESISTANCE". DURING TROUBLESHOOTING MAINTENANCE FOUND, WITH ELECTRICAL POWER REMOVED FROM ACTUATOR AND WITH INPUT MECHANISM TO ACTUATOR DISCONNECTED, RIGHT INBOARD AILERON DEFLECTED TO FULL RIGHT WING DOWN POSITION. WHEN FORCE WAS APPLIED TO INPUT LEVER UNABLE TO CONTROL POSITION OF AILERON. FOUND RIGHT INBOARD AILERON ACTUATOR BYPASSING CONTROL SOLENOID.