03/31/2008. Originally designed by Charles H. Day at Standard Aircraft Corporation, Elizabeth, New Jersey, USA, as a single-seat fighter for the Aviation Section of the USASC. Two prototypes, s/n 33769 and 33770, where tested, and although manoeuvrability and handling were commended, performance was inadequate for the combat role. However the design was ordered in quantity as an advanced pursuit trainer.
Fitted with an 100 hp Gnome rotary engine and a camera gun for target practice, 44556 was delivered to the USASC in early 1918. Later it was delivered to McCook Field with Project Number P-55, it was surveyed on January 14, 1926.