The Praga E-210 was a four-seat, twin-engined touring aircraft built in Czechoslovakia in the late 1930s. It had an unusual pusher configuration . Its tail unit and undercarriage were modified significantly before World War II and after the war a more powerful version designated E-211 was flown. Design and development The Praga E-210 was designed as a four-seat tourer or air-taxi. It seems to have appeared in public for the first time at the Paris Exhibition of late 1936, though it is not known whether it had made its first flight by then. It was a high wing cantilever monoplane, with an enclosed cabin for four ahead of the wing and in 1936 a conventional tailwheel fixed undercarriage and single fin. It was unusual in adopting a pusher configuration, with two engines close to the fuselage driving small propellers. Its layout was thus much like that of the Carden-Baynes Bee, its almost exact contemporary though a much smaller aircraft. The wing of the E-210 was made in a single piece, a wooden structure built around two spars and plywood covered. The leading edge was significantly swept, but the trailing edge was straight. The ailerons were steel framed and fabric covered. Between them and the engines were Schrenk type landing flaps. The 85/95 hp (63/71 kW) Walter Minor four cylinder inverted in line engines were cantilevered from the rear spar on steel frames, with fairings both above and below the wings. The flat sided fuselage was built on a steel tube framework, narrowing to the rear. The rounded nose and the cabin were plywood skinned and the rest fabric covered. The spatted mainwheels were mounted on short cantilever struts, making only a shallow angle to the ground and with the shock absorbers inside the fuselage. On the original aircraft there was a small castorable tailwheel, but later this was supplanted by a spatted, steerable nose wheel with a faired leg. By mid-1937 the original single fin had been replaced by a twin endplate fin arrangement. The fixed surfaces were wooden framed and plywood covered, the tailplane attached to the top of the fuselage and braced externally from below. The split elevators were fabric covered over wood, with trim tabs and the horn balanced rudders were of fabric covered steel. The cabin was well forward of the leading edge, providing good visibility, and seated four in two rows, the front seats having