As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AND ELECTRICAL ARCING IN COCKPIT AND RETURN TO BLOCKS FLT. DURING TAXI OUT THE CREW SELECTED WINDSHIELD HEAT ON, SHORTLY AFTER SEVERAL CRACKS FORMED WITH ARCING AND SMOKING FROM THE RT WINDSHIELD. THE CRACKING IS BELIEVED TO HAVE ORIGINATED FROM A SMALL (WITHIN ACCEPTABLE LIMITS) CRACK IN THE OUTER GLASS PLY, WHICH WAS FOUND BY THE GROUND CREW AFTER THE PREVIOUS FLIGHT. THE CREW TURNED THE WINDOW HEAT SYSTEM OFF AND SAFELY RETURNED TO BLOCKS. REMOVED AND REPLACED RT FWD WINDSHIELD. (K)