As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6265 - AUTOPILOT PITCH TRIM FOLLOWED BY STAB AND MACH TRIM MESSAGES. EXCESSIVE FORCE REQUIRED TO OVERRIDE NOSE HIGH ATTITUDE AND UNWANTED ROLL EXPERIENCED. REPLACED STAB TRIM MOTOR CONTROL, HORIZONTAL STABILIZER TRIM ACTUATOR AND HSTCU COMPUTER.