Aircraft
The Challenge was to be a contest of tourist aircraft, so competing aircraft had to be able to take at least two persons aboard, take off and land on a short field and cover a distance with a good cruise speed. For this Challenge, all countries designed new aircraft especially to meet the contest demands, the only exception was a single MacPherson's de Havilland Puss Moth, but it was modified as well. All these aircraft were monoplanes with 3 or 4 seats in an enclosed cab, an advanced wing mechanization (flaps, slats and some other devices) and mixed or metal construction.
Most aircraft were fast cantilever low-wing monoplanes: the German Messerschmitt Bf 108 (4), Fieseler Fi 97 (5) and Klemm Kl 36 (4), the Polish PZL.26 (5) and the Italian Pallavicino PS-1 (2) or braced low-wing monoplanes: the Czechoslovak Aero A.200 (2) and the Italian Breda Ba.39 (2) and Ba.42 (2). An exception were the basic aircraft of the Polish team - high-wing braced monoplanes RWD-9 (7), one of which was also flown by the Czech crew, and the Puss Moth. Of those, Bf 108 and PS-1 had a retractable landing gear.
The German aircraft had starting numbers from a range: 12-26, the Italian: 41-46, the Czechoslovak: 51-54 and the Polish: 61-81 (numbers were placed on fuselages in a black square frame).
Read more about this topic: Challenge International De Tourisme 1934