Two couples and their children, all relatives of a Redlands dentist, are among the dead. The plane had more passengers than it was designed to carry. Eyewitnesses express their shock, sorrow. A plane carrying 14 passengers on a family ski vacation from California was not designed to carry that many passengers, investigators said today as they began trying to explain the small, single-engine plane's fiery crash into a cemetery near the airport in Butte, Mont.