As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT WILL NOT ENGAGE. AUTOPILOT PUT AIRPLANE IN A 45 DEGREE BANK LT AND RT. DISENGAGED AUTOPILOT, STABILIZED AIRCRAFT AND RE-ENGAGED AUTOPILOT, AIRCRAFT STARTED ROLLING AGAIN. THE AIRCRAFT DIVERTED. RE-RACKED THE AUTOPILOT ROLL COMPUTER IAW MM, AUTOPILOTS CHECK GOOD NOW. SWAPPED AND AUTOPILOT ROLL COMPUTERS FOR TROUBLESHOOTING IAW MM. PN AND SN RECORDED ON LOG PAGE. (K)