Macchi M.52 being serviced SDASM Published on November 4, 2013 in 4 November 1927Full resolution (1920 × 1280) ← Previous Next → With its cowlings removed, the 1,000 horsepower Fiat AS.3 DOHC V-12 engine of the Macchi M-52 is visible. (San Diego Air and Space Museum Archive)