Flight from Calgary to Halifax.
http://www.canada.com/calgaryherald/...5564be&k=95915
Can't think of anything more frightening than major turbulence.
I experienced it once from Vancouver to Tokyo when i was 12. No one hit the ceilings like on that Westjet flight but everyone thought we were going down.
Everytime i get on a plane I always think thats its going to crash now.