Systems and methods of detecting low takeoff performance due to incorrect weight information

摘要

Systems and methods for performing V speeds verification. An example system determines if during a takeoff roll there is enough runway left for the aircraft to stop with a predetermined braking force. If an incorrect "too small" weight had been used to previously compute Vspeeds (e.g., V 1 ) and engine takeoff setting, the predicted point (based on the actual aircraft acceleration) to reach V 1 provides not enough runway length remaining to stop. If such a situation is determined, an alert is outputted to the flight crew.