As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO FIELD DUE TO SUSPECTED CENTER TANK FUEL LEAK. SUPPLEMENTAL DATA UPDATE MAINTENANCE CHECKED CENTER TANK FUEL QUANTITY CALIBRATION PER MAINTENANCE MANUAL AND FOUND CALIBRATION WITHIN THE MAINTENANCE MANUAL LIMITS. REPLACED CENTER TANK INDICATOR DUE TO DIM INDICATOR READOUT.