As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH 6317 PHX TO BIL. THE AIRCRAFT HAD A MACH/STAB TRIM CAUTION MESSAGE IN FLIGHT. WITH DIRECTION FROM MAINTENANCE CONTROL THE PILOT RESET THE SYSTEM IN FLIGHT. WHEN THE AIRCRAFT LANDED IN BIL, CONTRACT MAINTENANCE RE-REACKED HSTCU AND RESET SYSTEM. OPERATIONAL CHECK WAS GOOD AND NO OTHER DEFECTS NOTED AT THIS TIME.