The Sukhoi PAK FA (or Future Frontline Aircraft System), is a new Russian fifth-generation fighter. It is considered as a Russian answer to the US F-22 Raptor. Development of this new aircraft commenced in 2001. The T-50 prototype was revealed and made it's maiden flight in 2010. This fighter aircraft is expected to enter service with the Russian Air Force in 2015. It is intended to replace the ageing MiG-29 Fulcrums and Su-27 Flankers. Some sources report, that Russia plans to acquire up to 150 - 200 of these new fighters.

   It is worth mentioning, that development of this aircraft was also funded by India, which also plans to acquire up to 250 of these next-generation fighters, known as the HAL FGFA or Fifth-Generation Fighter Aircraft. The Indian aircraft version will be different from the Russian version. Some sources report, that the HAL FGFA will has a twin-seat configuration.

It is claimed that this aircraft will also be proposed for export customers.

   This stealthy air superiority fighter was expected to use two Saturn 117S engines, producing 142 kN of thrust in afterburning and 86.3 kN dry. However the PAK FA used a completely new Saturn engines during it's maiden flight, that generate a larger thrust. Exact specifications of the new engine are unknown. Some sources claim, that it produced 175 kN of thrust in afterburning.

   It is believed that this aircraft will carry up to 7 500 kg of ordnance. This fighter has 10 internal and 6 external hardpoints for the R-74M Archer and R-77M Adder air-to-air missiles.

   The Russian Sukhoi PAK FA will also be available as a twin-seater.