On 29 September 2006, Gol Transportes Aéreos Flight 1907 and a brand new Embraer Legacy business jet (registered N600XL) on its delivery flight collide in mid-air over the Amazon rainforest. The Boeing 737 commercial flight crashes into the Amazon, but the Legacy manages to make a safe landing at an airbase. All 154 people on the Gol jet die. Air traffic controllers had cleared both aircraft to fly at the same altitude in opposite directions, and the transponder of the Legacy had either failed or had been switched off, making both aircraft's traffic collision avoidance systems useless in preventing the collision.