What do you mean by 'truly vanished'? Do you mean like the twilight zone - ie, it hasn't vanished, so it's definitely a cover up?
You've had a few replies to this post, as if you were being serious, but I take it you were taking the piss?
MH370: Satellite images show possible crash debris in South China sea
http://www.theguardian.com/world/2014/mar/13/mh370-satellite-images-show-possible-crash-debris-in-south-china-sea-live
Did they do something like that in the Hudson? I appreciate the Hudson was a calm river, rather than an ocean, so it's not the same, but presumably the ocean can be calm sometimes?
I know. I think it's more likely than the plane being taken by aliens though. Maybe not by much, but slightly.