Either it was stolen or it crashed. I'm just thinking through how it could have happened.
It’s really obvious that the plane was purposefully diverted and it wasn’t some kind of accident. It’s also obvious that whoever is responsible knows quite a bit about flying and that plane.
As to whether we’ll ever find out what happened - we may not - just as we have never found out what happened to that other big airliner that basically disappeared into thin air about ten years ago.
We never found out about that one and it looks like we’re never going to find out about this one either.
I'm banking on a "Final Countdown" moment. She'll be back any year now.