As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 22,000 IN ICING CONDITIONS, OUTER PANE OF LEFT PILOT POSITION WINDSCREEN CRACKED, DUE TO ANTI-ICE ELEMENT ANOMALY, WHICH CAUSED A TEMPERATURE DIFFERENTIAL. ABOUT 80 EACH INSTANTANEOUS CRACKS OCCURRED. FLIGHT DISCONTINUED. REPLACED WINDSCREEN WITH NEW.