Maximum speed was to be around Mach 2. Empty weight was to be 7.800 kg. This relatively low value would be achieved by means of the use of compound materials. The experience of Dornier in these materials was wide (Alpha Jet and Do 228). In the proposal for this airplane suggested the use in the wing of 65% Carbon-fiber-reinforced polymer (CFRP), 20% aluminium and the rest in several materials as the titanium, the front fuselage would have 60% of CFRP, the central 18% and the bottom 10%, being completed with other materials employees in the wing, and the stabilizers would have 55% of CFRP, while the fin would take 70%, the same materials would be used for the intake ramps and the landing gear. (aeroespacio 1982/83)