Smolensk air disaster is a controlled flight into terrain, a plane which is unintentionally flown into an obstacle due to pilot error, which occurred in 2010, killing 96 passengers.
A controlled flight into terrain (CFIT, usually pronounced cee-fit) is an accident in which an airworthy aircraft, under pilot control, is unintentionally flown into the ground, a mountain, a body of water or an obstacle. Controlled flight into terrain due to pilot error Smolensk air disaster The Smolensk air disaster occurred on 10 April 2010, when a Tupolev Tu-154 aircraft of the Polish Air Force crashed near the Russian city of Smolensk, killing all 96 people on board. 
