As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN FUELING VALVE SWITCH AT FUELING PANEL IS BROKEN. SWITCH WILL NOT MOVE TO OPEN POSITION. BOTH LEFT MAIN FUELING VALVE ARE INOP CLOSED. BOTH FUELING VALVES NEED TO BE MANUALLY OPENED AND THEN LOCKED CLOSE. REPLACED SWITCH AND ALL CHECKS OKAY.