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B747 first officer reported a divert due to an overweight takeoff and subsequent increased fuel burn because cargo load was given in kilograms not pounds.
| Attributes | |
| ACN | 1393373 |
| Time | |
| Date | 201610 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Relief Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance Inflight Event / Encounter Fuel Issue |
Narrative:
After performing my normal duties as an international relief pilot (irp) in the cockpit all the way through climb-out I went on my break.I was getting up after my break period was over and was informed that we were diverting because we took off overweight and our increased fuel burn left us unable to go to our original destination. I was unaware during pre-flight of the overweight condition and was not involved in the discovery of the problem or the subsequent solution because I was on my break.the issue was a mistake on the weight and balance (wb). The flight plan had a payload shown that somewhat matched the wb. The pallets matched the wb; but subsequently was discovered to be in kilograms; not pounds.besides having to divert; safety of flight was compromised during takeoff. A reject of engine failure after V1 would probably have not come out successful.I can't think of a way; other than some procedural changes in doing the wb to fix this problem. There were no real cross check for us to do with the information we were given to discover the problem. The other irp walked the deck before flight and noted that the weights matched.a new wb system and closer involvement in operations to monitor for errors.
Original NASA ASRS Text
Title: B747 First Officer reported a divert due to an overweight takeoff and subsequent increased fuel burn because cargo load was given in kilograms not pounds.
Narrative: After performing my normal duties as an International Relief Pilot (IRP) in the cockpit all the way through climb-out I went on my break.I was getting up after my break period was over and was informed that we were diverting because we took off overweight and our increased fuel burn left us unable to go to our original destination. I was unaware during pre-flight of the overweight condition and was not involved in the discovery of the problem or the subsequent solution because I was on my break.The issue was a mistake on the Weight and Balance (WB). The flight plan had a payload shown that somewhat matched the WB. The pallets matched the WB; but subsequently was discovered to be in Kilograms; not pounds.Besides having to divert; safety of flight was compromised during takeoff. A reject of engine failure after V1 would probably have not come out successful.I can't think of a way; other than some procedural changes in doing the WB to fix this problem. There were no real cross check for us to do with the information we were given to discover the problem. The other IRP walked the deck before flight and noted that the weights matched.A new WB system and closer involvement in Operations to monitor for errors.
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.