MOSCOW, December 6. /TASS/. Russia’s Su-57 fifth-generation stealth air superiority fighter, also known as T-50, had performed its first test flight with a new-generation engine, a source in the Russian Industry and Trade Ministry told reporters on Tuesday.

"Russia’s newest fifth generation fighter, T-50, performed its maiden flight with the second stage engine on December 5, 2017, at the Gromov Flight Research Institute," the source said.

The 17-minute flight test was carried out by Sergei Bogdan, a chief test pilot of the Sukhoi aircraft maker.

"The flight took place in normal regime, in compliance with the flight assignment," the ministry said.