sentences:  The S-40 is expected to be classified as a very light jet, albeit it is planned to feature a cabin comparable to the Lear 60, Hawker 800, Phenom 300 and the Citation XLS, at a Maximum Take-Off Weight of less than .It shall be built using a graphite-epoxy construction process that makes the aircraft one third the weight of comparably sized aluminium airplanes.The aircraft is designed to cruise at at speeds up to 435 knots (Mach 0.76) and fly as far as 4170 km - while consuming about 40% less fuel than conventionally built planes - using two GE Honda HF120 engines.