Abstract: This invention relates to an improvement in a jumbo aircraft, in particular of high-wing monoplane design, with a fuselage and a retractable and steerable main landing gear and a device for high lift generation, the improvement comprising (a) a plurality of rows of landing gear units mounted along the aircraft fuselage and spread across a range extending predominantly in the longitudinal aircraft direction, the units forming the main landing gear, (b) the landing gear units being of the same design and identical dimensions, and (c) a device for switching-on the lift generating device at predetermined lift conditions together with setting and maintaining a longitudinal attitude of the aircraft or of its landing gear parallel to the taxiway and runway, whereby the take-off phase or the landing phase is performed using the method of direct lift control.