An interactive aircraft performance substantiation is provided by determining maneuvers for a user-selected aircraft, determining operation and performance variables for a user-selected maneuver, displaying a scale graphic representation of the user-selected aircraft according to aircraft dimensions, displaying load selection fields according to aircraft dimensions and load-sites dimensions, interactively updating the scale graphic representation of the user-selected aircraft to include an oriented graphic representation of a user-selected load according to the aircraft dimensions, load dimensions, and load-site dimensions, interactively determining mass properties of the user-selected aircraft according to the aircraft dimensions, the load dimensions, and the load-site dimensions; receiving operation properties for the user-selected maneuver corresponding to the operation variables; and displaying an aircraft performance substantiation responsive to determining performance properties of the user-selected aircraft according to the mass properties thereof and the operation properties thereof, the performance properties corresponding to the performance variables.