MOSCOW, October 25. /TASS/. Russia’s upgraded Sukhoi Su-57 fifth-generation fighter jet performed its debut flight on October 21, the press office of the United Aircraft Corporation (UAC, part of the state tech corporation Rostec) said on Tuesday.

"The Sukhoi Design Bureau within the UAC carries out work for further developing the Su-57. On October 21, the upgraded Su-57 fifth-generation plane performed its debut flight at the Gromov Flight Testing Institute’s airfield. The aircraft was flown by the Sukhoi Design Bureau test pilot, Hero of Russia Sergey Bogdan. The flight lasted 56 minutes and ran without any snags," the statement says.

The Su-57 fighter jet is also testing onboard equipment with extended functionality, the crew’s AI support and the option of using a broad range of new types of weapons, the UAC said.

"The aircraft also offers a possibility to install a second-stage engine," the statement reads.

The Sukhoi Su-57 is a Russian-made fifth-generation multirole fighter designed to destroy all types of air, ground and naval targets. The Su-57 fighter jet features stealth technology with the broad use of composite materials, is capable of reaching a supersonic cruising speed and is furnished with the most advanced onboard radio-electronic equipment, including a powerful onboard computer (the so-called electronic second pilot), the radar system spread across its body and some other innovations, in particular, armament placed inside its fuselage.

The Su-57 AI system assumes some of the pilot’s functions, including piloting and preparations for the use of weapons.