As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT T1263/28 ORD ELP AT 31000 FEET FIRST OFFICERS WINDSHIELD BEGAN TO ARC. POWER SECURED TO WINDSHIELD. ARCING STOPPED. OUTER PLY OF FIRST OFFICERS WINDSHIELD CRACKED. AIRCRAFT DIVERTED AND LANDED WITHOUT INCIDENT. REPLACED FIRST OFFICERS WINDSHIELD. SYSTEM GROUND CHECKED NORMAL OPERATION. (CLOSED)