<< >> NASA ASRS Report 1277678, July 2015

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.

Attributes
ACN	1277678
Time
Date	201507
Local Time Of Day	0601-1200
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Other Parked pre-departure
Component
Aircraft Component	Fuel Quantity-Pressure Indication
Person 1
Function	Captain Pilot Flying
Experience	Flight Crew Last 90 Days 176.23 Flight Crew Type 6849.90
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

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?

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Original NASA ASRS Text

Title: 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.

Narrative: 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?

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.