In what everyone is calling the "Seattle Plane theft," I presume because there isn't really a better term for what happened, a man now identified as 29 year old Richard B. Russell commandeered a Horizon Airlines turboprop, flew it a short ways before he crashed it into a small island on Puget Sound. He did not survive.
Authorities have released the transcripts of his conversations with air traffic control, and have cleared that this was not a terrorist act. Rather, it seems that the man succumbed to incredible stress and depression, and crashed the plane as a rather climactic way to end his own life.
The story is HERE.