As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WITH PLANE IN TRIM SELECTED AUTO PILOT A ABRUPT / VIOLENT HARD ROLL TO THE RIGHT 30 DEGREES AUTOPILOT DISCONNECTED. HAND FLOWN FOR 5 MIN, RETRIMMED, SELECTED A AGAIN ANOTHER ABRUPT HARD ROLL TO RIGHT AUTOPILOT DISCONNECT. AIRCRAFT AIR INTERRUPTED BACK TO PHX. EMERGENCY WAS NOT REQUIRED. REMOVED AND REPLACED AILERON AUTO PILOT ACTUATOR-A DETENT SOLENOID PER AMM 22-17-12.