Curtiss JN4 "Jenny" - USAAS Die-cast model with a plastic stand The JN-4 "Jenny" was a single-engine, 2-seater biplane built by the Curtiss Aeroplane Company as a training aircraft for the US Army. Curtiss combined the best features of the model J and model N trainers, and developed the JN or "Jenny". It was widely used during World War I to train beginning pilots, but its more significant role in aviation history was as a barnstorming and mail-carrying airplane in the 1920s. FeaturesDaron for Curtiss Jn4 Jenny Airplane ModelSpecifications Age: 14 and up