As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT/EVV - FLT 4022 - AT CRUISE FL 220, CREW REPORTED HEARING A LOUD NOISE FOLLOWED BY THE FIRST OFFICER'S WINDSHIELD CRACKING. AIRCRAFT DIVERTED TO DAY AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. AIRCRAFT WAS LATER FERRIED TO PIT WHERE MAINTENANCE REPLACED THE FIRST OFFICER'S FRONT WINDSHIELD IAW MM 56-11-00. AIRCRAFT RETURNED TO SERVICE.