Within a span of days, Russia's fifth generation fighter aircraft developed by Sukhoi Corporation under its highly secret PAK FA project Friday made its second successful flight in the country's far east. The flight carried out from the KNAAPO plant in Komsomolsk-on-Amur lasted 57-minutes, ten minutes longer than its maiden flight on January 29 and the fighter was painted in the combat colours of the Russian air force, according to Interfax. This time also it was piloted by test-pilot Sergei Bogdan, who expressed satisfaction at the performance of the aircraft to be inducted by the Russian Air Force in 2015....