As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH 2861 CLT. AIRCRAFT RETURNED TO THE FIELD. MX REPORTED THE CREW REPORTED A MAIN PITCH TRIM AND BACKUP PITCH TRIM FAIL OCCURRED AND WOULD NOT RESET. MAINTENANCE PERFORMED AN ELECTRICAL TEST OF THE HORIZONTAL STABILIZER CONTROLLER AND OPS CHECKED THE TRIM SYSTEM. ALL OPS CHECKS WERE GOOD.