Takeoff of the aircraft under conditions of external disturbances and the presence of high-altitude obstacles along the course can lead the pilot to a stressful state and subsequent execution of erroneous actions. In order to inform the pilot about the possibility of safe takeoff, methods have been developed for predicting characteristic events on the trajectory of takeoff and climb to fly over an obstacle. Algorithms for calculating the distances to the decision point for takeoff, to the point of lifting the nose wheel and the rolling reserve within the runway are obtained. The results of statistical testing of algorithms are presented. Small prediction errors are demonstrated.