B737 Undifferentiated or Other Model
Flight Crew Last 90 Days 176.23; Flight Crew Type 6849.90
Human-Machine Interface; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Aircraft; Equipment / Tooling
On previous flight same aircraft; totalizer showed over fueled but truck pumped 53 gallons less than calculated. On this flight; totalizer showed over fueled by 100 pounds.  Truck pumped 30 gallons less than calculated. Discrepancy between truck amount and totalizer amount was 45 gallons. Flight Operations Manual (FOM) procedures are a bit unclear.  In all cases the alternative method (sticking the tank) has yielded another value which does not agree with either truck or totalizer.  What is the procedure in such a case?
A B737 Captain reports discrepancies between the amount of fuel pumped by the fuel truck and the amount shown on the aircraft totalizer. He believes that the Flight Operations Manual procedures are unclear in this situation and requests guidance.