As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT CHECKS THE FLIGHT CREW DETERMINED THE FUEL CROSS FEED VALVE FAILED TO CLOSE. THE MAINTENANCE TEAM VERIFIED THE DISCREPANCY. THE MAINTENANCE TEAM REMOVED THE DEFECTIVE VALVE WITH AN OVERHAULED CROSS FEED VALVE. OPERATIONAL CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.