As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA INFLIGHT T822/25AUG. CREW REPORTED THE LT OUTER TANK ISOLATION VALVE CLOSED. FUEL SYSTEM OPERATED NORMALLY. CREW WAS CONCERNED ABOUT POSSIBLE FUEL IMBALANCE. LANDED MIA WITHOUT INCIDENT. REPLACED LT HAND OUTER TANK FUEL ISOLATION VALVE ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPS.