First of three prototypes, the Hs 124 V1 (V = Versuchsflugzeug, test aircraft) had a mockup nose-turret and was first flown February 1936. The Hs 124 V2 had an extensively glazed nose and used BMW-engines (license-built Pratt & Whitney Hornet). The Hs 124 V3 was completed as a two-seat heavy Zerstörer (fighter) with extra firing-power installed.
The Hs 124 proved to be very agile for its size and configuration, but before its first flight the heavy fighter-bomber concept was abandoned and the heavy fighter-role was to be fulfilled by the Messerschmitt Bf 110.
Hs 124 V1:
Two 640 hp Junkers Jumo 210C twelve-cylinder liquid-cooled inverted V-engines with three-blade propeller.
Hs 124 V2:
Two 850 hp BMW 132A nine-cylinder air-cooled radials with three-blade propeller