Communications between the tower and pilot were normal on approach and it’s not clear what went so drastically wrong when the plane touched down.

The crash of a passenger jet that flipped while landing in Toronto, Canada, is raising questions about not only cause of the accident but also the safety of flying.

Dramatic crash video has emerged of Delta Air Lines Flight 4819 landing at Toronto's Pearson International Airport on Monday, Feb. 17, and then flipping over as a portion of the jet erupts in flames ...