As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT ELEVATOR CONTROL JERKS ON CLIMBOUT AND IN LEVEL FLIGHT. AUTOPILOT ELEVATOR SERVO INDICATOR SHOWS CORRESPONDING MOVEMENT. THIS IS A REPEAT ITEM. COULD NOT DUPLICATE AUTOPILOT JERKS. SWAPPED TO AUX VERTICAL GYRO FOR TROUBLESHOOTING. CAPTAINS NORMAL GYRO TO BE DEFERRED. SEE ITEM 3M. AUTOPILOT CHECKS GOOD IAW DC-8 22-0.