in February 2016 at  Zhukovsky was spotted new Russian Sukhoi PAK FA fifth-generation fighter.

The PAK FA is a fifth-generation fighter programme of the Russian Air Force. The T-50 is the name of the prototype aircraft (though it is unlikely it will be the name for the production aircraft) designed by Sukhoi for the PAK FA programme. The aircraft is a stealthy, single-seat, twin-engine jet fighter, and will be the first operational aircraft in Russian service to use stealth technology. It is a multirole fighter designed for air superiority and attack roles. The fighter is planned to have supercruise, stealth, supermaneuverability, and advanced avionics to overcome the prior generation of fighter aircraft as well as ground and maritime defences.

Compared to the previous generation fighters, the PAK FA combines the functions of a strike aircraft and a fighter, thus offering a number of unique capabilities. The use of composite materials and innovative technologies plus the aerodynamic layout of the aircraft, special airframe coating and measures to reduce the power plant, antenna and cockpit signature assure unprecedentedly low radar, optical and infrared observability. This considerably improves the operational effectiveness against air and ground targets at all times and in all weathers.