The Stinson 76 Sentinel of 1940, designed by A P Fontaine, featured full-span slots, which created a problem during testing with near-fatal results. It first flew on 28 June 1941, powered by a 175hp Lycoming, and piloted by Al Schramm. With modification to half-span slots and enlarged tail surfaces it became final prototype for L-5.
Only the one was built, registered NX27772.
All Aero 