[5] Only two prototypes and 25 production aircraft (by Packard) were completed by the Armistice that marked the end of World War I, and led to mass cancellation of outstanding orders for the LUSAC-11.

Two LUSAC-11s were sent to France for evaluation by the Army Air Service just before the end of the War, which resulted in the type being considered unsuitable for combat.

[6] The LUSACs saw no squadron service, being used as liaison aircraft by US Military attaches in Europe, and for trials work in the United States.

[6] One LUSAC-11, fitted with one of the first turbochargers,[7] flown by Major Rudolph William Schroeder (de) made an attempt for the world altitude record on 27 February 1920.

Schroeder's oxygen supply failed during the attempt, causing the pilot to pass out, only regaining consciousness close to the ground.