As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ENGAGEMENT OF THE AILERON CHANNEL OF THE AUTOPILOT, MODE A, HARD UNCOMMANDED ROLL TO THE RIGHT OCCURS. SAME CONDITION OCCURS IN MODE B BUT AT A REDUCED RATE AND CORRECTS ITSELF. REPLACED ROLL COMPUTER AND NR 1 DIRECTIONAL GYRO DUE TO FAILURE.