Why many air crashes in Russia?

                                                      

                  The twin-engine French-Italian made ATR-72 turboprop aircraft

                                                      

The twin-engine ATR-72 plane heading to Surgut crashed 30 kilometers from the city of Tyumen shortly after takeoff.

A failure in the process of melting the plane might be the most likely cause of plane crashthat killed 31 people according to federal investigators