As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - LEFT TANK FUEL QTY INDICATOR INTERMITTENTLY GOES BLANK. TOTALIZER GOES BLANK ALSO. BITE OF FQI BOX SHOWS FAULT CODE C1 51 5355 56 57 58 59 AND 60 TSM POINTS TO LT TANK UNITS AND OR WIRING DEFER L MAIN TANK FUEL TANK TO QTY INOP AS PER MEL 28-11A ENT IN MIC AUTH 11-120DC-C DFRL. REPLACED FQIS PROCESSOR UNIT. PERFORMED REQUIRED TESTS. NO FAULTS OPS CHECK GOOD. (M)