Very rare. It was a very cold day, and for maintenance of aircraft was involved heat engine. This machine is very old, we can say antiques. It was about 50 years, and it warmed first aircraft Tu-22.
Chernovtsy (Shypintcy), Ukraine. This aircraft is made entirely by human hands, which sits in the cockpit. The plane has not flown at the time of shooting, but only performed the test run. A few minutes after this photo was taken the nose landing gear has been seriously damaged.