The Lancair IV series is made of three models. All are composite, low- wing, single-engine, four-seat monoplanes with retractable tricycle landing gear. The Lancair IV is an unpressurized kit plane. The single engine piston Lancair IV is powered by a Continental TSIO-550-E engine of 350 hp. The cruise speed at 75% is 287 knots and the stall speed is 63-65 knots. The empty weight is 2000 lb and the gross weight is 3550 lb.