As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6233 - IAD-BWI - DURING CRUISE, AIRCRAFT MADE A UNSCHEDULED LANDING DUE TO FO'S WINDSCREEN CRACKED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED FO'S WINDSCREEN. OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)