The Sukhoi PAK FA ( Future Frontline Aircraft System), is a fifth generation fighter aircraft being developed by Sukhoi OKB for the Russian Air Force.

The current prototype is Sukhoi’s T-50. The PAK FA when fully developed is intended to replace the MiG-29 Fulcrum and Su-27 Flanker in the Russian inventory and serve as the basis of the Sukhoi/HAL FGFA project being developed with India. A fifth generation jet fighter, it is designed to directly compete with Lockheed Martin’s F-22 Raptor and F-35 Lightning II. The T-50 performed its first flight January 29, 2010. Sukhoi director Mikhail Pogosyan has projected a market for 1000 aircraft over the next four decades, which will be produced in a joint venture with India, two hundred each for Russia and India and six hundred for other countries.


| General characteristics | |
| Crew: 1 | |
| Length: 19.8 m (65.9 ft) | |
| Wingspan: 14 m (46.6 ft) | |
| Height: 6.05 m (19.8 ft) | |
| Wing area: 78.8 m2 (848.1 ft2) | |
| Empty weight: 18,500 kg (40,785 lb) | |
| Loaded weight: 26,000 kg (57,320 lb) | |
| Useful load: 7,500 kg (combat load) (16,534 lb) | |
| Max takeoff weight: 37,000 kg (81,570 lb) | |
| Powerplant: 2× New unnamed engine by NPO Saturn and FNPTS MMPP Salyut of 175 kN each[36][44] Prototype with AL-41F1 of 147 kN each, definitive version with new engine >157 kN | |
| Maximum Fuel weight: 10,300 kg (22,711 lb) | |
| Performance | |
| Maximum speed: 2,600 km/h (Mach 2.45) (at 17,000 m altitude) (1,615 mph (at 45,000 ft altitude)) | |
| Cruise speed: 1,300 - 1,800 km/h (808 - 1,118 mph) | |
| Ferry range: 5,500 km | |
| Service ceiling: 20,000 m (65,616 ft) | |
| Rate of climb: 350 m/sec (1184 ft/sec) | |
| Wing loading: 330(normal) - 470(maximum) kg/m2 (67(normal) - 96(maximum) lb/ft2) | |
| Thrust/weight: 1.4 | |
| Maximum g-load: +10.0/+11.0 g | |
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