What was found
FLIGHT 5344, AFTER TAKEOFF RECEIVED A STAB/MACH TRIM CAUTION MESSAGE, CREW DECLARED AN EMERGENCY AND RETURNED TO THE DEPARTING CITY EVV. REPLACED THE HSTCU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5344, AFTER TAKEOFF RECEIVED A STAB/MACH TRIM CAUTION MESSAGE, CREW DECLARED AN EMERGENCY AND RETURNED TO THE DEPARTING CITY EVV. REPLACED THE HSTCU.