Two Heinrich Pursuits were ordered by the USASC under the serials 539 and 540, and built by the Victor Aircraft Corporation at Freeport in 1917, the first was delivered in November of that year. Some testing was undertaken at McCook Field, Dayton, Ohio, but official US policy at this time was to forego fighters of national design in favor of tested foreign types.
Nevertheless, the Heinrich Pursuit was considered to have potential as a fighter trainer, and two additional aircraft were ordered, serialed 40007 and 40008. These employed the more reliable Le Rhône rotary of 80 hp, had a strengthened cabane and paired rather than single struts and a lighter structure, gross weight being reduced by 170 lb (77 kg). These aircraft were built in 1918, but no further development was undertaken."
