Both Wings Fall Off of Massive Airplane

Have you are seen both wings fall off of massive airplane? Check out this video where firefighter's plane crashes while putting out the fire. All three people on board were killed during this tragedy.

https://www.youtube.com/embed/TBcC8zqNjKk

What could have caused this terrible accident? Was it a structural failure from bad design? Or bad conditions (heavy aircraft)? Maybe it was a pilot error? Leave your opinion in the comment section!

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