The L-5 was the military version of the commercial Stinson 105 Voyager. The U.S. Army Air Forces purchased six Voyagers in 1941 as YO-54s for testing, and quantity orders for Sentinels began in 1942. Between 1942-1945, the USAAF ordered 3,590 L-5s, making it the second most widely used USAAF liaison