As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA - FLIGHT 2573 - FLIGHT CREW REPORTED ENGINE NR 1 BLEED VALVE CLOSED IN FLIGHT AND THEY WERE UNABLE TO REOPEN. CREW PERFORMED AIR RETURN AND LANDED ACFT UNEVENTFULLY. MX R&R ENGINE BLEED VALVE AND PERFORMED OPS CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.