As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAT - TRIM 'FAIL' WARNING ACTIVATED DURING AIRCRAFT DESCENT. CREW DISENGAGED AUTOPILOT SYSTEM AND ATTEMPTED TO MANUALLY TRIM AIRCRAFT. UNABLE TO MOVE ELEVATOR TRIM FORWARD OF (MINUS 1) INDEX. MAINTENANCE CLEANED DEBRIS FROM ELECTRIC TRIM SERVO GEAR. ITEM SYSTEM OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE. (X)