North American Aviation YF-86H-1-NA Sabre 52-1975 in flight Published on April 20, 2013 in 30 April 1953Full resolution (1600 × 1200) ← Previous Next → North American Aviation YF-86H-1-NA Sabre 52-1975 during a test flight. A long pitot boom is used for initial instrument calibration. (U.S. Air Force)