The United States military has concluded pilot error caused one of its Osprey aircraft to crash-land in waters off Japan's southern island of Okinawa in December, the Japanese government said Monday.The finding was part of a final report released following a series of accidents involving the tilt-rotor aircraft in Japan and abroad which stirred safety concerns in Okinawa, where the bulk of U.S. military facilities in the country are based.Okinawa Deputy Gov. Moritake Tomikawa visited Camp Foster in the prefecture on Monday to hear the outcome of the investigation report from Lt. Gen. Lawren…READ FULL ARTICLE