Prosecutors have suggested he researched Suicide measures in the week before the crash, and Cockpit Door security provisions.
So in short, he researched how to kill 150 people, and did it.
Evil, pure unadulterated evil.
Although I "get" what you are trying to say, the very fact this person flew a plane into a mountain killing 149 innocent souls makes him very much "A Nut Job" IMHO.
All very strange this.
I've seen myself, one Pilot go for a slash and re-enter the cockpit by entering a code on the door.
I've also read somewhere that the only way he cannot re-enter is if the mechanism is disabled from the inside, I'm pretty sure this was brought in as a post 9/11 measure to...