As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB THE CREW REPORTED THE 10TH STAGE BLEED AIR ISOLATION VALVE WOULD NOT CLOSE, DURING AFTER T/O CHECKS. THE CREW ELECTED TO RETURN TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AIRCRAFT AND REMOVED AND REPLACED THE 10TH STAGE BLEED VALVE. NO OTHER DEFECTS WERE NOTED AND AIRCRAFT WAS RELEASED FOR SERVICE.