Development system for an aeronautical software application comprising a structured functional description language

The method involves realizing an executable software by a development segment of an aeronautical software application. Functional capacities of widgets created or integrated by computing units of the segment, are defined by associating consumed variables i.e. input plugs, to modifiable attributes of one widget, and associating produced variables i.e. output plugs, to notifications of events produced by the widget, where one input plug is specific data to dynamically modify graphical attributes of the widget and one output plug is data signaling a state change request for one equipment.