As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) 30 TO 40 SECONDS AFTER WINDSHIELD HEAT WAS TURNED ON TO LOW POSITION WITH AIRCRAFT CLIMBING THROUGH 18,000 FEET, THE WINDSHIELD DEVELOPED SEVERAL CRACKS ALL COMING FROM THE AREA OF THE HEAT STRIP ON LOWER SECTION OF SCREEN. WINDSHIELD INSTALLED IN MARCH OF '96, AND HAD ONLY 695 HOURS ON IT.