As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 64 LAS-BOS - EMERGENCY LANDING - WHILE EN ROUTE AT FL370, RIGHT WINDOW HAD ARCING AND SPARKS. COMPLIED WITH QRH PROCEDURES. FIVE MINUTES LATER, RIGHT WINDOW SHATTERED. CREW DECLARED AN EMERGENCY AND MADE AN EMERGENCY DESCENT (DIVERSION) INTO ORD. MAINTENANCE REMOVED AND REPLACED THE RIGHT WINDSHIELD AND RT WINDOW HEAT COMPUTER PER AIRBUS MAINTENANCE MANUAL 56-11-11-400-001-01 AND 30-42-34.