If it went into the sea, what are the chances she went in whole? I mean, stayed intact following impact with the water?
If it isn't at sea...I find it a little disturbing that it is this easy to lose a commercial jetliner over land in the 21st Century.
To the first, I find it very, very hard to imagine how something that big, that fragile, hitting the water at any sort of speed to go in whole. I don't think it's possible.
To the second, if the transponder was off civilian radars wouldn't be able to track it, that's my understanding at least.