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and seen the report , it is clear that the choice is:
HEINKEL He-51
brief History
Biplane decoladas unequal wings designed by Karl Schwärzler, chief engineer from Heinkel He-49, all-metal structure with flat bilargueros covered wood and fabric. Sheet metal fuselage covered anteriorly and scrim on the back. The ailerons were located in the upper plane, having flaps on the bottom. The landing gear oleo-pneumatic dampers available and hydraulic brakes. It V1 powered by a BMW engine, and twelve-cylinder V-750 HP power, by six vertical exhaust tubes caracterizba down on each side of the engine. He was armed with two machine guns MG-17 7.9 mm. Capable of 1200 rounds per minute, with manual reset, mounted on the motor. This model was delivered to the Luftwaffe in mid-1934, he participated in the Spanish civil war, have arrived in Cadiz (Spain) An August 6, 1936 ... There were six I-51 with the first squadron along with other form would form Legion Condor biplanes ... These were initially piloted by both Germans and Spaniards. Its use as a hunting was much lower than the Russian rivals I-15 and I-16 so it is only used to support missions and ground attack until the arrival of the brand new I-109 at that time (1937) was in experimental phase.