As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 2207 - CREW REPORTED A CABIN ALT CAS MESSAGE FOLLOWED BY CABIN ALT RWP MESSAGE ON CLIMB-OUT. CREW ELECTED TO RETURN TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND THE OVERBOARD SHUTOFF VALVE OPEN. MAINTENANCE SECURED THE VALVE IN THE CLOSED POSITION IAW THE MEL 21-24-06 OPTION 2. PRESSURIZATION OPS CHECKS WERE GOOD AT THIS TIME. AIRCRAFT WAS RELEASED FOR SERVICE. (M)