As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FLT 864 - WHILE CLIMBING OUT FROM PIT AT FL 210, THE LEFT FRONT WINDSCREEN CRACKED. THE FLIGHT CREW FOLLOWED SPECIAL PROCEDURES AND DECLARED AN EMERGENCY. THE FLIGHT RETURNED TO PIT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT WINDSHIELD PER AMM 56-11-00. (M)