As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW FOUND DURING PREFLIGHT CHECKS THAT THE RIGHT FUEL SHUT OFF VALVE FAIL PREFLIGHT TESTS. THE MAINTENANCE TEAM REMOVED THE FAILED FUEL SHUTOFF VALVE AND REPLACED IT WITH AN OVERHAULED VALVE. OPERATIONAL AND LEAK CHECKS WERE SATISFACTORY. THE AIRCRAFT WAS THEN RETURNED TO SERVICE.