4U9525.*

This one takes the cake, doesn't it? Young guy, seems to have been a happy guy. No motive. It is just so random: What if Patrick S.,* the pilot, hadn't had to go to the bathroom?

*UPDATED March 27, 5:44 pm UTC: Sondenheimer http://www.dailymail.co.uk/news/article-3013109/Passengers-didn-t-realise-Germanwings-pilot-deliberately-flying-mountain-locking-captain-cockpit.html