As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG - FLT 4010 - EN ROUTE FROM PHL INBOUND TO CVG, CREW REPORTED THAT THE FIRST OFFICER'S WINDSHIELD CRACKED. CREW PROCEEDED ON WITH THE FLIGHT AND LANDED WITHOUT FURTHER INCIDENT AT CVG. MX REPLACED THE F/O'S WINDSHIELD IAW MM 56-11-00. AIRCRAFT WAS THEN RETURNED TO SERVICE.