As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLT 980 - IN TURN YOKE VERY JERKY, AUTO PILOT DISENGAGES. OK IN LEVEL FLIGHT, NR 2 AUTO PILOT. TROUBLESHOT AUTOPILOT SYSTEM. FOUND AILERON SERVO RHEOSTAT BAD. CHECKED WITH METER LEFT SIDE GOOD RIGHT SIDE BAD. REMOVED AND REPLACED RHEOSTAT AND AILERON SERVO DRIVE PER MD-80 MM 22-11-01. SYSTEM OPS CHECKED GOOD PER MD80 MM 22-11-01 AND RTS PER 22-01-05. (M)