an aircraft including a wing and a pylon , wherein the pylon provides an airfoil inverted for an airfoil of the wing , and an improvement and method for improved flight dynamics for 20 and 30 series learjet ® is provided . the improvement includes an increased distance between a leading edge of a wing and an intake of an engine of the aircraft , which reduces drag and increases lift for improved flight dynamics of the aircraft . the inverted airfoil of the pylon negates an influence of the pylon on flight dynamics for improved overall flight dynamics of the aircraft . the method includes steps of removing an original engine from an original pylon , removing the original pylon from the fuselage of the aircraft , and mounting a new pylon in a new location adjacent to the fuselage , wherein the new location is aft of the original location .