As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AT CRUISE THAT THE LEFT SIDE WINDOW CRACKED. AIRCRAFT RETURNED TO CLT LANDING WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE WINDOW. INSPECTION, REMOVAL, REPLACEMENTS, AND OPERATIONAL CHECKS WERE ACCOMPLISHED USING THE AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RELEASED FOR SERVICE.