First prototype of the PAK FA fighter in January 2010.
First prototype of the Sukhoi T-50-1 (PAK FA) future fighter in April 2010.
After a few flights, main flight tests begin in LII (Gromov Flight Research Institute) @ Zhukovsky...

Experimental Sukhoi Su-47 in 1997 and in 1999.

Experimental MiG 1.44, 1999.
Mariusz Wojciechowski. All right reserved. Copyright © 2008, 2010.