On a previous post, deleted by someone for what reason I do not know, I wrote: "5 hull losses in less than a year. Makes one wonder."
Let me be a bit more precise. I meant TU154 hull losses.
The fact that a type has had 5 accidents in less than a year is quite relevant. I will not go into guessing what these reasons are but I am sure there is no single contributing factor but as with all accidents, the final outcome is the end of a long chain of events etc.