I don't think it was an accident.
RIP to all the families and friends of those who died.That plane had nothing to do with the crash.
The question now is why would a KHL hockey team use a charter flight with old planes that are not having the best reputation. Money would not be an issue, as most players on board would be millionaires.
That plane had nothing to do with the crash.What has been stated as the cause of this crash, if it's not the old generation plane?