As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW CREW REPORTED LOST CAPTAINS PRIMARY FLIGHT DISPLAY INDICATION & FLIGHT DIRECTOR. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LT AIR DATA INERTIAL REFERENCE UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.