The crash of Air India flight AI171, a Boeing 787 Dreamliner, shortly after takeoff from Ahmedabad has shaken the global aviation community. With hundreds of lives lost, and intense scrutiny from investigators,

One of the strongest pieces of evidence under review is a CCTV clip that shows the takeoff and the crash of the plane.

When a plane crashes, it’s natural to question just how safe flying really is. Here’s what the data shows – and why we often perceive the risk to be greater than it is.