As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO A FLIGHT CONTROL DATA CONCENTRATOR #1 FAULT MESSAGE DURING CLIMBOUT, OUT OF 5000 FEET. THE AIRCRAFT LANDED SAFELY AT DFW AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE REPLACED THE #1 FLIGHT CONTROL DATA CONCENTRATOR 3CE1 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 27-95-34.