An Air Tractor AT-400 drawing by Huang Wenting, a senior student at Nanjing University of Aeronautics and Astronautics, who has been drawing airplanes for her graduate project. When some of her drawings were posted online, the Internet community was stunned by their beauty and details, and airplane fans from all over sent her their highest regards. With a 507 kW Pratt & Whitney Canada PT6A-15AG engine, the Air Tractor AT-400 is a family of agricultural aircraft that first flew in the United States on September 1979. Of low-wing monoplane taildragger configuration, they carry a chemical hopper between the engine firewall and the cockpit. [Photo/ Nanjing University of Aeronautics and Astronautics]