As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE WITH LITE TURBULENCE THE CENTER AUTOPILOT HAD A BUMP MOTION IN THE YOKE. THEN INITIALLY AND ALTITUDE DEVIATION. LEFT AUTOPILOT WAS SELECTED WITH NO FURTHER PROBLEMS. PERFORMED AUTOPILOT SYSTEM TEST PER TASK 22-10-00-735-040, ALSO AN OPERATIONAL CHECK PER TASK 22-10-00-715-002 AND NO FAULTS FOUND. REPLACED THE CENTER FCC COMPUTER AS PRECAUTIONARY PER MM 22-11-01.