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B737 captain reported the FMS would not upload the correct zero fuel weight. It had to be entered manually.
| Attributes | |
| ACN | 1423690 |
| Time | |
| Date | 201702 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Type 13376 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Weight And Balance |
Narrative:
We noticed a discrepancy in the uploaded ZFW (zero fuel weight). There was a 2200 lb difference from the final weights. After a conversation with dispatch and load plan it was determined that the ZFW on the final weight sheet was correct and even though the load planner was entering the correct ZFW to be sent to the aircraft; the number that appeared was the original flight plan ZFW which was incorrect. We manually entered the correct ZFW and it was accepted by the FMS but we did not understand why the FMS would not upload the correct ZFW sent by the load planner several times. Perhaps another coding issue for saber.
Original NASA ASRS Text
Title: B737 Captain reported the FMS would not upload the correct Zero Fuel Weight. It had to be entered manually.
Narrative: We noticed a discrepancy in the uploaded ZFW (Zero Fuel Weight). There was a 2200 lb difference from the final weights. After a conversation with dispatch and load plan it was determined that the ZFW on the final weight sheet was correct and even though the load planner was entering the correct ZFW to be sent to the aircraft; the number that appeared was the original flight plan ZFW which was incorrect. We manually entered the correct ZFW and it was accepted by the FMS but we did not understand why the FMS would not upload the correct ZFW sent by the load planner several times. Perhaps another coding issue for Saber.
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.