As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEA FAIL 2 AMBER CAS MESSAGE IN FLIGHT AT FL430. N1S FLUCTUATED, TRIM INDICATIONS XED OUT, AIRSPEED MMO DECREASED TO M.82 POSSIBLY DUE TO MOMENTARY LOSS OF MACH TRIM. ABOVE INDICATIONS OCCURRED FOR ABOUT TWO SECONDS THEN REVERTED TO NORMAL WITHOUT REOCCURRENCE, BUT CAS MESSAGE STAYED ILLUMINATED FOR REMINDER OF FLIGHT. FOLLOWED CHECKLIST. MAINTENANCE CURRENTLY DOWNLOADING DATA FOR INVESTIGATION. REPLACED UNIT WITH NO FURTHER ACTION REQUIRED.