As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STAB TRIM MONITOR WARNING: RECIVED STAB TRIM MONITOR CAS MESSAGE IN FLIGHT. RAN CHECKLIST. POWERED DOWN AFTER LANDING. CAS MESSAGE REMAINED AFTER POWERING BACK UP. CORRECTIVE ACTION; REPLACED HORIZONTAL ACTUATOR CONTROL UNIT UT021 IAW CE680A AMM 27-40-20. PERFORMED OPS AND FUNCTIONAL CHECKS IAW CE680A AMM 27-40-20. OPS AND FUNCTIONAL CHECKS GOOD WITH NO DEFECTS NOTED.