he was relatively inexperienced with only 100 hours in the cockpit. there s no evidence of a conspiracy or terrorism. translator: nothing permits us to say it is a terrorist act. now we will see the environment of the person. reporter: investigator also likely probe his relationships his communications, trace his whereabouts and behavior in recent weeks. he was accepted into lufthansa, 100% set to fly without restrictions. translator: when we research our candidates, we look in particular for psychologically healthy co-workers. reporter: there s no followup monitoring of psychological health. once you re in and flying, you are not psychologically tested. reporter: the germanwings apparent murder-suicide is not week. in 1999 a pilot nosedived a flight into the atlantic. though it s been disputed days earlier we had been reprimanded