As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, LT FUEL QUANTITY INDICATION BLANK INTERMITTENTLY. ACCOMPLISHED FQUIS BITE PER FIM 28-41-00. SHOWED FAULT CODE 63. ACCOMPLISHED FIM 28-41-00 TABLE 127. E/E WET CAPACITANCE CHECKED GOOD. FQIS INSULATION RESISTANCE TEST CHECKED GOOD. REMOVED AND REPLACED LEFT WING MAIN TANK UNIT NR 13 PER AMM 28-41-00. ACCOMPLISHED FQIS BITE AND NO FAULTS NOTED. LEAK CHECK OK. OK FOR SERVICE.