What was found
INSPECTION TYPE:NACENTER TANK FUEL INDICATED 100 LBS ON GROUND. QUICKLY ROSE TO 800 LBS AT CRUISE. INDICATED 1300 LBS TOP OF DESCENT. INDICATIONS SEEM TO VARY QUICKLY.REMOVED & REPLACED CENTER TANK L REFUEL VALUE CONTROLLER IAW B757 MM 28-21-12 SHOOD 0558685 2-16-23 SDF] ACCOMPLISHED FIMM 28-11-00-815-813 FIG 110 BLOCKS 1, 3, 21, AND 53 FOUND MIGRATION RATE OF 200 LBS PER HOUR SUSPECT DEFUEL VALVE SEE REQ 435405 WITHIN LIMITS OF AMM 28-21-00-201 PLACED ON DMI PER