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B737NG flight crew reported receiving incorrect takeoff weights from dispatch. Flight crew cited a dead battery on the performance computer and having to utilize dispatch for the weights as contributing factor.
| Attributes | |
| ACN | 1414795 |
| Time | |
| Date | 201701 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | BNA.Airport |
| State Reference | TN |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Laptop Computer (performance planning etc.) |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 228 |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 151 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Weight And Balance Deviation - Procedural Published Material / Policy |
Narrative:
During the process of inputting the takeoff data; the battery went dead on the [performance computer]. Being the first flight of the day; we elected to have dispatch run the takeoff data and we were going to let the [performance computer] charge in the cradle. When we got the numbers; we failed to realize that dispatch had used our zero fuel weight as our takeoff weight. I attribute the oversight on our part due to our lack of familiarity to getting our takeoff data in such a manner. We realized our error too late in the takeoff to effectively adapt other than to just rotate slower to accommodate for the slower bugged speeds.
Original NASA ASRS Text
Title: B737NG flight crew reported receiving incorrect takeoff weights from Dispatch. Flight crew cited a dead battery on the performance computer and having to utilize Dispatch for the weights as contributing factor.
Narrative: During the process of inputting the takeoff data; the battery went dead on the [performance computer]. Being the first flight of the day; we elected to have dispatch run the takeoff data and we were going to let the [performance computer] charge in the cradle. When we got the numbers; we failed to realize that dispatch had used our zero fuel weight as our takeoff weight. I attribute the oversight on our part due to our lack of familiarity to getting our takeoff data in such a manner. We realized our error too late in the takeoff to effectively adapt other than to just rotate slower to accommodate for the slower bugged speeds.
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.