The voice recorder of the jet was found and examined. The recording reportedly said that one of the pilots left the cockpit and could not return while the plane went down. That was a misery. The door to the cockpit had broken? The pilot in the cockpit fainted away?
Many Airplane crashes have been reported recent years. The fatal crash rate on aircrafts might be lower than other transportation systems, but a plane crash cause a large number of deaths at one time. I really hope that kind of tragedy will never happen again.