As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 1864 - EN ROUTE SAT-ORD, DURING FLIGHT HEAT CONTROLLER ON WINDSCREEN SHORTED. WINDSHIELD PROCEEDED TO CRACK. DIVERTED DFW AND LANDED WITHOUT FURTHER INCIDENT. REPLACED CAPTAINS WINDSHIELD AND HEAT CONTROLLER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)