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Continue to ChatSukhoi Company adds to flight tests program the second PAK FA prototype https://aviationnews.eu/news/2011/03/sukhoi-company-adds-to-flight-tests-program-the-second-pak-fa-prototype/
Sukhoi Company adds to flight tests program the second PAK FA prototype https://aviationnews.eu/news/2011/03/sukhoi-company-adds-to-flight-tests-program-the-second-pak-fa-prototype/