As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 451 - MCI - WITH AUTOPILOT IN HGD HOLD AIRCRAFT ROLLS TO APPROXIMATELY WINGS LEVEL FROM AND BANK ANGLE AND TURNS AT ABOUT 1 DEGREE PER MINUTE TO THE LEFT. ALL OTHER AUTO PILOTS FUNCTIONS ARE NORMAL. REMOVED AND REPLACED ROLL COMPUTER AND OPERATIONAL CHECK IAW MM 22-11-16. (M)