WELCH, George S., Chief Test Pilot, with North American Aviation YF-100A Super Sabre 52-5754 Published on October 11, 2012 in 12 October 1954Full resolution (534 × 692) Next → North American Aviation’s Chief Engineering Test Pilot, George S. Welch, with the first prototype YF-100A Super Sabre, 52-5754, at Edwards Air Force Base, California. (U.S. Air Force)