Capital Airlines Flight 20 was a U.S. scheduled passenger flight from Washington, D.C. to Norfolk, Virginia. A Vickers Viscount flying the route crashed into a farm in Charles City County, Virginia, on January 18, 1960. The accident was the fourth fatal crash involving a Capital Viscount in less than two years; the first three were Capital Airlines Flight 67 (April 1958), Capital Airlines Flight 300 (May 1958) and Capital Airlines Flight 75 (May 1959). The plane was cruising at an altitude of 8,000 feet when it encountered icing. This caused two engines to fail. As the craft descended, the other two engines also failed, causing the propellers to autofeather. The crew tried and failed to restart the engines, and were unable to unfeather the propellers normally; they then put the plane into