Damn, it seems like there's been a lot or air disasters recently. Has there been any comment on the cause of it?

Few other links:

http://www.theguardian.com/world/2015/mar/24/german-a320-airbus-plane-crashes-french-alps
http://www.bbc.co.uk/news/world-europe-32030270
http://www.telegraph.co.uk/news/worldnews/europe/france/11491587/Airbus-A320-crashes-in-French-Alps-with-148-people-on-board-live.html