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A 737 flight crew inadvertently left a fuel cross feed valve open. This resulted in a significant fuel imbalance; which was discovered during final approach. The crew elected to land with the imbalance; resulting in a post flight inspection and maintenance action.
| Attributes | |
| ACN | 1296518 |
| Time | |
| Date | 201509 |
| 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 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Crossfeed |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 198 Flight Crew Type 12000 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Inflight Event / Encounter Fuel Issue |
Narrative:
In an effort to use all the center tank fuel; I turned on one pump and opened the crossfire valve. I subsequently failed to close the valve. The differential main pump pressure caused a 3;000 pound imbalance between the main tanks. The first officer (pilot flying) noticed the imbalance on final approach. We landed with the imbalance. I notified maintenance of the discrepancy and; after consultation with maintenance control and the inspection procedures; the decision was made to remove the aircraft from service.
Original NASA ASRS Text
Title: A 737 flight crew inadvertently left a fuel cross feed valve open. This resulted in a significant fuel imbalance; which was discovered during final approach. The crew elected to land with the imbalance; resulting in a post flight inspection and maintenance action.
Narrative: In an effort to use all the center tank fuel; I turned on one pump and opened the crossfire valve. I subsequently failed to close the valve. The differential main pump pressure caused a 3;000 pound imbalance between the main tanks. The First Officer (Pilot Flying) noticed the imbalance on final approach. We landed with the imbalance. I notified Maintenance of the discrepancy and; after consultation with Maintenance Control and the inspection procedures; the decision was made to remove the aircraft from service.
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.