As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE GROUND COMMUNICATION DOOR LEFT OPEN AFTER TAKEOFF. CREW ELECTED TO RETURN TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND NO DEFECTS. MAINTENANCE PERFORMED OPS CHECKS AND CLOSED DOOR. AIRCRAFT WAS RELEASED FOR SERVICE.