Spirit of St. Louis was a high-altitude aircraft with which Charles Lindbergh flew across the Atlantic in May 1927. The aircraft, originally designated Ryan NYP, was designed by Donald Hall of Ryan Airlines based on the Ryan M-2 model, and was named after the city of St. Louis, because the city contributed financially to its construction. The plan to cross the Atlantic was also supported by the vision of winning the Orteig Prize - $ 25,000, written by hotelier Raymond Orteig in 1919. Hall and Ryan Airlines staff and Lindbergh worked feverishly to rebuild the aircraft. They built it in just 60 days, at a cost of about $ 10,000. The rush was completely in place. In the spring of 1927, more pilots and groups were about to make a transatlantic flight and win the Orteiga Prize.