As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN AUTOPILOT WAS ENGAGED THE AIRCRAFT ROLLED VIOLENTLY TO THE LEFT. AP WAS IMMEDIATELY DISENGAGED AND WE NOTICED A WHINING/HUMMING SOUND WHICH CONTINUED FOR REMAINDER OF THE FLIGHT. -- DEFERRED AUTOPILOT CONTROLLER PER MEL 22-05 PULLED AND COLLERED C/B'S D-2, E-2 DUE TO AILERON SERVO RUNNING CONTINUOUSLY. AILERON SERVO ALSO VIBRATES WHEN RUNNING. PLACARDS INSTALLED. REMOVED AND REPLACED STICK SHAKER DRIVE SERVO.