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MD80 flight crew notices a fuel discrepancy between the fuel gauges and the fuel sheet of over 600 pounds.
| Attributes | |
| ACN | 690318 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 690318 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : fuel gauges other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
This is the second report for 2 similar occurrences which happened. Prior to departure and after receiving the fuel slip; I noticed a discrepancy between what we had for total fuel on board as read from the gauges and what was supposed to be on board when using the arrival fuel (pounds) and the gallons added (times the density) as annotated on the fuel slip. Notified maintenance. Used the fuel stick measuring method and it confirmed that the actual fuel on board matched what was on the fuel slip. The fuel gauges were found to be reading 1000 pounds high. 500 pounds per wing tank. Release fuel was 18744 pounds. Left tank gauge showed 9450 pounds; right tank showed 9450 pounds and center showed 100 pounds. Aircraft arrived with 4744 pounds and the fueler added 1917 gallons. 1917 gallons times the density of 6.81 = 13054 pounds. According to the fuel slip; we had 4744 pounds and 13054 pounds added which should equate to 17798 pounds but the fuel gauges read 19000 pounds. Fuel stick measuring method confirmed that we had roughly 18000 pounds of fuel on board. This aircraft had recently undergone the fuel confidence check. The aircraft was taken OTS.
Original NASA ASRS Text
Title: MD80 FLT CREW NOTICES A FUEL DISCREPANCY BTWN THE FUEL GAUGES AND THE FUEL SHEET OF OVER 600 LBS.
Narrative: THIS IS THE SECOND RPT FOR 2 SIMILAR OCCURRENCES WHICH HAPPENED. PRIOR TO DEP AND AFTER RECEIVING THE FUEL SLIP; I NOTICED A DISCREPANCY BTWN WHAT WE HAD FOR TOTAL FUEL ON BOARD AS READ FROM THE GAUGES AND WHAT WAS SUPPOSED TO BE ON BOARD WHEN USING THE ARR FUEL (LBS) AND THE GALLONS ADDED (TIMES THE DENSITY) AS ANNOTATED ON THE FUEL SLIP. NOTIFIED MAINT. USED THE FUEL STICK MEASURING METHOD AND IT CONFIRMED THAT THE ACTUAL FUEL ON BOARD MATCHED WHAT WAS ON THE FUEL SLIP. THE FUEL GAUGES WERE FOUND TO BE READING 1000 LBS HIGH. 500 LBS PER WING TANK. RELEASE FUEL WAS 18744 LBS. L TANK GAUGE SHOWED 9450 LBS; R TANK SHOWED 9450 LBS AND CTR SHOWED 100 LBS. ACFT ARRIVED WITH 4744 LBS AND THE FUELER ADDED 1917 GALLONS. 1917 GALLONS TIMES THE DENSITY OF 6.81 = 13054 LBS. ACCORDING TO THE FUEL SLIP; WE HAD 4744 LBS AND 13054 LBS ADDED WHICH SHOULD EQUATE TO 17798 LBS BUT THE FUEL GAUGES READ 19000 LBS. FUEL STICK MEASURING METHOD CONFIRMED THAT WE HAD ROUGHLY 18000 LBS OF FUEL ON BOARD. THIS ACFT HAD RECENTLY UNDERGONE THE FUEL CONFIDENCE CHK. THE ACFT WAS TAKEN OTS.
Data retrieved from NASA's ASRS site as of January 2009 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.