What has caught my attention the most is the way the only survivor of this crash managed to dodge death, by jumping off the moving airplane while it was crashing against the ground. It is such a bold choice it seems to be out of an action movie from Hollywood...
Tragically, the only survivor of all this situation also lost his brother in the accident and he is likely to suffer from mental trauma the rest of his life because of this.

If I had to guess, all this happened because security standards of the airline were not proper to keep functioning their planes safely forms long period of time, and they neglected their maintenance.
Whatever was the cause of all this, damage is already done and there is not much we can do about it, just to pressure authorities to held those responsible into account.