This exercise consists in obtaining and analyzing the 3DOF performances of a BADA model aircraft. The evolution of aircraft state variables over time $$(V(t), \gamma (t), \chi (t), x_e(t), y_e(t), h_e(t), m(t))$$, including the 4D trajectory $$(x_e, y_e, h_e, t)$$, in a typical flight of a commercial transportation aircraft are to be analysed. An aircraft type among those in BADA database (See [1]) will be chosen. Python programming Language will be used to integrate the resulting set of differential equations and plot the results.