YF-12AThe YF-12 "Blackbird" was an experimental fighter-interceptor version of the Lockheed A-12 reconnaissance aircraft. In Air Force flight tests on May 1, 1965, the YF-12 set a speed record of 2,070.101 mph and an altitude record of 80,257.65 feet.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/yf-12a/Copy URL to clipboard> DownloadShareSize1041x780px