The full test cycle is to be completed in 2018, said the Russian defense minister.
Two Sukhoi Su-57 stealth fighter jets have successfully completed a two-day program of tests in Syria, Russian Defense Minister Sergei Shoigu told reporters on Thursday.
"Indeed, they were there for a while. Two days. During that time, they completed a program of trials, including combat ones," Shoigu said, according to TASS. "I can say that the trials were success and the planes returned home a week ago."
"There were two planes escorted by flying laboratories and test beds monitoring the parameters of weapons work," the defense minister said.
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"I am unaware where the released images were taken as the jets were kept in hangars throughout [the mission]," the minister said.