As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH AUTO PILOT ENGAGED RAPID DEFLECTION OF CONTROL WHEEL OCCURS BOTH LEFT AND RIGHT OF ABOUT 10 DEGREES. DEFERRED AUTO PILOT SYSTEM AND MX CONTROL WAS NOTIFIED. REMOVED AND REPLACED ROLL CHANNEL COMPUTER, OPS CHECKS GOOD IAW B727 MM 22-11-111.