Medical students who survived when an Air India plane crashed into their hostel in Ahmedabad say their first reaction was to help treat the injured.

There have been cases of a very small number of survivors in very serious accidents, but it is "very rare" for there to be only one, a professor told Newsweek.

The Air India crash that killed 241 passengers is among the deadliest plane crashes in recent history. Here's a look at the five deadliest plane crashes in history.