Germanwings Crash: Mental Illness Alone Does Not Explain Co-Pilot's Behavior, Experts Say

Investigators may never know exactly why Germanwings co-pilot Andreas Lubitz carried out what is believed to have been a deliberate plane crash in the French Alps on Tuesday, but mental health experts say that any mental illness that Lubitz may have had is just one possible contributor to the tragedy. Most people with mental health disorders do not hurt other people, studies show. Other factors, such as feelings of isolation or anger, or drug and alcohol abuse, are often involved when people commit unimaginable acts, such as deliberately crashing a plane, said Seena Fazel, a professor of forensic psychiatry at the University of Oxford in England. 
At Lubitz's home, investigators found a doctor's note that excused him from work on the day of the crash, and another note that had been ripped up, The New York Times reported. Germany's Spiegel magazine reported that police found information suggesting that Lubitz had a mental health problem, though this has not been confirmed.

http://www.livescience.com/50291-germanwings-copilot-mental-illness.html

Fourth thread on this now.