As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 458 - AFTER TAKEOFF FROM DFW, DURING CLIMB-OUT, ELECTRICAL BURNING SMELL NOTICED IN COCKPIT AND CABIN. EMERGENCY DECLARED. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED PACK RECIRCULATING FAN. SYSTEM GROUND CHECK NORMAL OPERATION. (M)