The flight simulator basic model is in charge of updating the data that characterize the game world state: until now it deals with both aircraft positions and speeds.
The physical model is very simple: no rubbing, no aerodynamic consideration, only plane moving consideration. Consequently, the equations used to update data are very simple. It has been noticed that considering these restrictions, the model works well.
However a problem can occur, even if it has not been observed: since all the mathematics functions deal with double parameters (like sinus and cosinus functions), and since all the parameters are float, there can be some roundness problems. Considering all the parameters as double can easily solve this.
As it has been said, the model is very basic. It could be easily improved. However, to make it meaningful the AI would have to be improved: the more complex the model is, the more parameters it takes into account the more complicated the AI is. Thus improving the model will have some consequences on the entire bot. Consequently, the model is likely to stay as simple as it is right now.