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B777 first officer and ramp employee reported a significant airborne change to the zero fuel weight due to an erroneous potable water entry.
| Attributes | |
| ACN | 1511075 |
| Time | |
| Date | 201801 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Experience | Flight Crew Total 12391 Flight Crew Type 2030 |
| Person 2 | |
| Function | Ramp |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance |
Narrative:
We were climbing out when a new weight manifest came across the printer. The zero fuel weight was about 3000 pounds higher than the final weights sent on the ground. We asked dispatch to look into the matter and let us know which set was correct. He told us the set sent airborne was correct; and that the load planner entered 0% rather than 100% for the potable water. This resulted in us taking off with performance data 3000 pounds lighter than we actually were. This obviously affected safety; and could have made a critical difference in the event of an engine failure. I think there should be a more effective crosscheck of information with load planning.
Original NASA ASRS Text
Title: B777 First Officer and ramp employee reported a significant airborne change to the Zero Fuel Weight due to an erroneous potable water entry.
Narrative: We were climbing out when a new weight manifest came across the printer. The Zero Fuel Weight was about 3000 pounds higher than the final weights sent on the ground. We asked dispatch to look into the matter and let us know which set was correct. He told us the set sent airborne was correct; and that the load planner entered 0% rather than 100% for the potable water. This resulted in us taking off with performance data 3000 pounds lighter than we actually were. This obviously affected safety; and could have made a critical difference in the event of an engine failure. I think there should be a more effective crosscheck of information with load planning.
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.