Three T-50 (PAK FA) prototypes have performed more than 120 flights, Lenta.ru reports. It has been declared by president of United Aircraft Corporation (UAC), Mikhail Pogosyan. According to him, the fourth prototype will join the flight testing in 2012. "We will start the deliveries of pilot batch in 2013. The program is being performed in accordance with the schedule", - Pogosyan noted.

The third prototype of Т-50 has joined the flight test program in late November 2011. The fourth one - Т-50-4, should have joined the flight testing last year. The first two prototypes are being tested at the airfield of Gromov Flight Research Institute in Zhukovsky at the moment. The first jet’s prototype has been performing flights since January 2010 and the second one – since March 2011. As expected, the testing of T-50’s airframe will be completed in 2012.

In accordance with the agreement between Sukhoi Company and Russian Ministry of Defense, the airframer should deliver first 10 T-50s to the Lipetsk combat employment and retraining center, where the testing will be continued. At present, the Ministry of Defense plans to acquire 60 T-50s, aside from jets from the pilot batch. The demand for T-50 jets in the Russian air forces is estimated at 150 ones.