A California-based company announced recently it had successfully flown a small cargo plane with no pilot on board. Reliable Robotics, a maker of aircraft automation systems, called last month's successful autonomous flight of a Cessna 208B Caravan with no one on board, was a first for the aviation industry. The flight of the Cessna 208B Caravan happened just outside San Jose on Nov. 21. The Mountain View-based company said that a remote pilot supervised the pilot-less aircraft from Reliable’s control center 50 miles away.