As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 934 - EN ROUTE GYE-MIA, AT FL310, .78 MACH, RIGHT AUTOPILOT KICKED OFF RESULTING IN TAIL SWING AND RIGHT BANK. CHECKED SYSTEMS AND REENGAGED AUTOPILOT. LANDED AT MIA WITHOUT FURTHER INCIDENT. MAINTENANCE DOWN LOADED DFDR. VERIFIED THAT RIGHT BANK WAS 21 DEGREES AND .27 LATERAL ACCELERATION. ACCOMPLISHED SECTION 12 TURBULENCE CARD 05-92-13. REPLACED FLIGHT CONTROL PANEL UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)