There is no way the airliner could have hit the water and remained intact. When aircraft touches down on landing, they're travelling, roughly, at ninety to a hundred-twenty-five miles per hour.

Bellying in onto water would have torn that plane apart.

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charlie98210
"Whoa!" she said. "Cry 'Havoc!' And let loose the dogs of war!"
And, like Banquo's ghost, they just won't go away.