Russia's Monster Plane That Actually Flew | Kalinin K-7
Everything about the Kalinin K-7 is big. Big engines, big wings, big weight, big bombload, not to mention the colossal balls of the pilots that got behind the controls of this thing.
The K-7 was born in a time when aircraft manufacturers were trying to build a new generation of massive transports, able to carry over 100 passengers or troops across large distances. Konstantin Kalinin proposed his design, the K-7, and to gain Soviet government support he also designed it to operate as a bomber that could carry an impressive 19,000kg bombload.
https://en.wikipedia.org/wiki/Kalinin_K-7