As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2865 THE CREW REPORTED THAT AFTER DEPARTURE ON CLIMB THEY RECEIVED A MASTER WARNING MESSAGE THAT THE PITCH TRIM MAIN WAS INOPERABLE. THE CREW DECLARED AN EMERGENCY AND RETURNED TO DFW. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED HORIZONTAL STABILIZER CONTROL UNIT IAW EMB MM 27-40-01. THE OPERATIONAL TEST WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.