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B777 captain reported difficulty reconciling the passenger count due to flight planning software errors.
| Attributes | |
| ACN | 1584300 |
| Time | |
| Date | 201810 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Electronic Library (other than Nav database) |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Experience | Flight Crew Total 13925 Flight Crew Type 8807 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance Ground Event / Encounter Other / Unknown |
Narrative:
Taxiing out to xxl for ZZZ lp (load planner) was having a hard time reconciling the passenger count. We had to do a manual head count and sent it to lp. After half an hour they wanted another head count. This did not help. Dispatch could not help us. We were on the taxiway X facing west by xxr for almost 3 hours. We received multiple conflicting final weights and T/O data messages. The data coming over ACARS was not consistent with a verifiable final weight and take off data message. On top of this the trim kept fluctuating. We tried to save the flight by confirming the data with dispatch and lp but could not accomplish this. We were running low on fuel; time and ideas. [The flight operations manager] on satcom concurred and we went back to the gate and cancelled. The airplane that was in the software for lp was a different configuration of the B777ER than what we were in. At the gate we were told that all the data that was coming to us was for a different type of B777ER aircraft configuration.
Original NASA ASRS Text
Title: B777 Captain reported difficulty reconciling the passenger count due to flight planning software errors.
Narrative: Taxiing out to XXL for ZZZ LP (Load Planner) was having a hard time reconciling the passenger count. We had to do a manual head count and sent it to LP. After half an hour they wanted another head count. This did not help. Dispatch could not help us. We were on the taxiway X facing west by XXR for almost 3 hours. We received multiple conflicting final weights and T/O Data messages. The data coming over ACARS was not consistent with a verifiable final weight and take off data message. On top of this the trim kept fluctuating. We tried to save the flight by confirming the data with dispatch and LP but could not accomplish this. We were running low on fuel; time and ideas. [The Flight Operations Manager] on SATCOM concurred and we went back to the gate and cancelled. The airplane that was in the software for LP was a different configuration of the B777ER than what we were in. At the gate we were told that all the data that was coming to us was for a different type of B777ER aircraft configuration.
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.