Russia has unveiled its new stealth fighter jet, meant to boost the country's ageing arsenal of weaponry and be a rival to the US F-22 Raptor.
The Sukhoi T-50, also called the PAK FA, made its maiden flight in Russia's far east. Test pilot Sergei Bogdan said it was "easy and comfortable to pilot".
Prime Minister Vladimir Putin said much work needed to be done before mass production began in 2015.
Stealth technology is meant to nearly eliminate a plane's radar signature.
The plane is being developed by the Sukhoi company at its Komsomolsk-on-Amur production plant.
The new jet has been developed in partnership with India. It is seen as a significant milestone in Russia's efforts to modernise its Soviet-era military hardware.
