How technological constraints could influence competitiveness? An empirical study of avionics systems

→ HUD is the only one system where aeronautics firms are losing power → on high critical systems, the number of aeronautics firms is growing, despite the wave of mergers in the 1990´ → a relation may exist between the critical level of a system, and the competition of firms able to make it. → Our future work will be dedicated to the identification of i technological cycles and the role of aeronautics suppliers in the innovation on displays technologies.