What was found
STAB TRIM AND MACH TRIM CAUTION MESSAGES CAME ON TWICE DURING FLIGHT. REPLACED STAB TRIM/MACH TRIM CONTROL PANEL WITH SERVICEABLE UNIT. OPERATIONAL CHECK GOOD IAW MM 27-00-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STAB TRIM AND MACH TRIM CAUTION MESSAGES CAME ON TWICE DURING FLIGHT. REPLACED STAB TRIM/MACH TRIM CONTROL PANEL WITH SERVICEABLE UNIT. OPERATIONAL CHECK GOOD IAW MM 27-00-00.