As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2840, THE CREW REPORTED A RUDDER TRIM RUN-AWAY AT 50-100 FEET ABOVE AFTER TAKEOFF. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RUDDER PCU, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS TEST FLOWN SATISFACTORILY. THE AIRCRAFT WAS THEN APPROVED FOR RETURN TO SERVICE.