As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE OF FLIGHT 7823 CREW REPORTED A STAB/MACH TRIM FAILURE. CREW DIVERTED TO NEAREST SUITABLE AIRPORT AND FLIGHT LANDED SAFELY. THE HORIZONTAL STABILIZER TRIM CONTROL UNIT WAS REPLACED AND A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED. AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE