[That's what I meant when I said : No proven ways. AF447 was almost a first in its kind.
What "proven" ways
, there were many such "ways" in which an aircraft "upset" (weather, engine failure, inattention, etc.) of whatever kind caused a plunge from high altitude, like this China Airlines, it happened many times and it was proven because it happened. Obviously it happened quite a bit more in GA. Sometimes folks survived to tell the story. Again - and it was my main point - it happened with no participation of explosives, I consider extremely unlikely that explosives or sabotage had anything to do with this case either.