Curtiss JNS-1

The Curtiss JNS-1 was a standardized, modernized version of the famous JN series of Jenny trainers, the aircraft that taught the majority of American and Canadian pilots during and just after World War I. Appearing in the early 1920s, the JNS, or "Standard Jenny," was created by rebuilding and re-engining obsolescent JN-4H and JN-6H airframes to a common configuration. In place of the original 90-horsepower Curtiss OX-5, the JNS was fitted with the more powerful Wright-built Hispano-Suiza engine of roughly 150 to 180 horsepower, giving improved performance and reliability.

As a two-seat biplane with tandem open cockpits, it continued to serve as a primary trainer for the U.S. Army through the 1920s. Several hundred Jennys were reworked to JNS standard, extending the service life of one of the most influential training aircraft in American aviation history.