I-7 (from the "fighter seventh"); originally HD—-37c - Soviet fighter-polutoraplan "light maneuverable", designed in the design Bureau Heinkel in Germany with the original name HD-37c. It was built under license in the USSR from 1931 to 1934 - only 131 units were built. Almost immediately after the withdrawal from production was withdrawn from service. According to the official version, it was adopted as a temporary measure due to the delay in the implementation of its own projects. Not possessing any outstanding data is interesting in that it was the first and only combat aircraft of foreign development, adopted and produced in the USSR in large quantities, despite the fact that the country-manufacturer itself is not mass produced. Blueprint: (AG-5 Ejection, AG-6 Parachute, AG-7 "Auto Pilot") Cockpit
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