As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED ON FINAL FLAPS WOULD NOT EXTEND PAST 15 DEGREES WITH FLAPS 25 DEGREES SELECTED. PERFORMED GO AROUND AND ACCOMPLISHED QRH. EMERGENCY DECLARED FLIGHT LANDED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED FLAP SLAT ELECTRONIC UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.