As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORF - FL1926, FLIGHT WAS CLIMBING OUT OF PHL THROUGH FL290 WHEN THE CAPTAINS WINDSHIELD BEGAN TO CRACK. CAPTAIN DECIDED TO DIVERT INTO ORF. NO EMERGENCY WAS DECLARED AND THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE CAPTAINS WINDSHIELD HEAT CONTROLLER AND THE WINDSHIELD PER MM. OPERATIONAL CHECK NORMAL. REFERENCE USAASB97117.