Accident → Children's holiday party on doomed plane

Bashkirian Airlines Flight 2937, registration RA-85816, was a Tupolev 154M passenger jet en route from Moscow, Russia, to Barcelona, Spain. DHL Flight 611, registration A9C-DHL, was a Boeing 757-23APF cargo jet flying from Bergamo, Italy, to Brussels, Belgium. The two aircraft collided in mid-air on 1 July 2002, at 21:35 (UTC) over the towns of Owingen and Uberlingen in Germany, (near Lake Constance), killing all 71 aboard both aircraft. The German Federal Bureau of Aircraft Accidents Investigation (BFU) determined on 19 May 2004, that the accident had been caused by problems within the air traffic control system and problems with the use of the collision warning system. On 24 February 2004, the controller who was on duty at the time, Dane Peter Nielsen, was stabbed to death by Vitaly Kaloyev who had lost his wife and two children in the accident.