As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - PRIMARY LONGITUDINAL TRIM INOPERATIVE AFTER TAKEOFF. ALTERNATE TRIM WORKED AND PRIMARY TRIM DID NOT WORK USING NOSE DOWN. EMERGENCY DECLARED LANDED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED PRIMARY STAB TRIM MOTOR AND CAPTAINS PRIMARY STAB CONTROL SWITCHES. SYSTEM GROUND CHECK NORMAL OPERATION.