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B737-300 captain discovers during preflight that the fuel added plus the fuel on board did not add up to the present fuel on board. It is decided the fueler made an error and the flight departs. Enroute; center tank fuel increases indicating that the original fuel sheet was correct and that the aircraft departed with 6000 pounds more fuel than thought. Maintenance can find no discrepancies with the center tank gauge and no logbook entry is made.
| Attributes | |
| ACN | 988647 |
| Time | |
| Date | 201201 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Quantity-Pressure Indication |
| Person 1 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 158 |
| Person 2 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 217 Flight Crew Type 8000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance Inflight Event / Encounter Fuel Issue |
Narrative:
As we were completing our preflight duties for the flight; the agent brought in the load schedule. As I was entering the info; the captain completed the fuel audit and realized there was a discrepancy with the fuel numbers. The fuel the aircraft had come in with the night before and the fuel recently added were not correctly adding up to the total fuel on board. Captain informed the agent. Apparently; the agent found the discrepancy with the fuel being entered incorrectly from the previous flight. The agent brought down a new load schedule and the fuel audit was successfully completed. After we took off; I believe we were in cruise when the captain realized that the center fuel tank was indicating more fuel than what we took off with and the total fuel on board was more than what we took off with. When we landed; it was decided that we would remove all the fuel from the center tank at a remote pad; which we did. The fuel removed from the tank equaled the amount the gauge had read beforehand. We returned to the gate; refueled; did our preflight duties again. The fuel audit was correct; the gauge was reading accurate so it was not written up for discrepancies.
Original NASA ASRS Text
Title: B737-300 Captain discovers during preflight that the fuel added plus the fuel on board did not add up to the present fuel on board. It is decided the fueler made an error and the flight departs. Enroute; center tank fuel increases indicating that the original fuel sheet was correct and that the aircraft departed with 6000 pounds more fuel than thought. Maintenance can find no discrepancies with the center tank gauge and no logbook entry is made.
Narrative: As we were completing our preflight duties for the flight; the Agent brought in the load schedule. As I was entering the info; the Captain completed the fuel audit and realized there was a discrepancy with the fuel numbers. The fuel the aircraft had come in with the night before and the fuel recently added were not correctly adding up to the total fuel on board. Captain informed the Agent. Apparently; the Agent found the discrepancy with the fuel being entered incorrectly from the previous flight. The Agent brought down a new load schedule and the fuel audit was successfully completed. After we took off; I believe we were in cruise when the Captain realized that the center fuel tank was indicating more fuel than what we took off with and the total fuel on board was more than what we took off with. When we landed; it was decided that we would remove all the fuel from the center tank at a remote pad; which we did. The fuel removed from the tank equaled the amount the gauge had read beforehand. We returned to the gate; refueled; did our preflight duties again. The fuel audit was correct; the gauge was reading accurate so it was not written up for discrepancies.
Data retrieved from NASA's ASRS site as of July 2013 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.