As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH HAD DIFFICULTY FLYING STRAIGHT WITHOUT UNUSUALLY SEVERE RT AILERON AND RUDDER INPUTS SPI SHOWED LT OUTBD AILERON STUCK AT 8 UNITS UP. MTC IN PROGRESS LT AILERON NO MOVEMENT. REPLACED LT O/B AILERON SERVO, OPS CHECKS NORMAL.