On April 27th 2012 a Boeing 727-200 was deliberately crashed in the Mexican desert. The aircraft was unmanned and completely remote controlled. In the cabin were several crash test dummies.
The purpose of the crash was to determine which forces people on board will have to endure during a crash. Dummies were in several positions, sometimes without a seatbelt, to determine the effectiveness of the safety measures on board of civil aircraft.
Prior to crashing, the aircraft had to be flown over populated areas. Mexican authorities required the plane to be manned during this stage of flight. Shortly before crashing the crew parachuted out of the Boeing 727.