What was found
FOLLOW UP TO FQIS ISSUES IN THE LEFT TANK DUE TO IMBALANCE INDICATION IN FLIGHT. ACCOMPLISHED FQIS SYSTEM TEST PER B737-800 AMM 28-41-00-730-801 FOR #1 FUEL TANK. TANK UNIT CAP: 412.9 PF, COMPENSATOR CAP: 61.85 PF. ACCOMPLISHED AMM 28-41-21-710-801 FOUND COMPENSATOR AND ALL TANK UNITS FAIL RESISTANCE AND CAPACITANCE CHECK. GROUNDED - YES. REPLACED TANKS 10 & 11 REF B737-800 AMM 28-41-21/400. REPLACED COMPENSATOR PROBE AND TANK UNITS 1, 4-9 REF AMM 28-41-21/400. REACCOMPLISHED A TANK & COMP UNITS TEST. ALL VALUES NOW WITHIN LIMITS. REF AMM 28-41-21/501. ETOPS GROUND VERIFICATION GOOD. ORIG SUB DATE: 12/27/2022