Russia is set to hold the first test of...
"The [test] flight was initially scheduled for Thursday, but has been postponed," the source at the Gagarin KNAAPO company, a subsidiary of aircraft holding Sukhoi, said.
Russia"s only known fifth-generation project is Sukhoi"s PAK FA and the current prototype is the T-50. It is designed to compete with the U.S. F-22 Raptor, so far the world"s only fifth-generation fighter, and the F-35 Lightning II, but has yet to take to the skies.
Speaking at a news conference later on Thursday, the chief of the Russian state-controlled arms exporter Rosoboronexport said India remained Russia"s sole partner in the project.
"We [Russia and India] are working to build the fifth-generation aircraft," Anatoly Isaikin said.
Russia has been developing its newest fighter since the 1990s. The country"s top military officials earlier said the stealth fighter jet with a range of up to 5,500 km would enter service with the Air Force in 2015.