Do The Russians Have More Than One T-50 Flying Around?

One of many T-50 images to 'escape' into the public domain on January 29.

How Long Has The PAK-FA Or T-50 Been Flying? -- Plane Talking

Did this PAK-FA or T-50 (above) take to the sky for the first time on January 29, or is there another element to the stealth characteristics of the Russian answer to the Joint Strike Fighter or JSF F-35 on which the future air superiority of Australia depends?

This note is being circulated by Peter Goon, the co-founder of Airpower Australia.

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My Comment: My take .... there is more than one prototype flying around. The different pictures cannot be ignored.