The Dash-80 roll was a 1-G maneuver that didn't strain the airframe at all. Local legend says that single barrel roll was enough to convince an airline industry

The Dash-80 roll was a 1-G maneuver that didn't strain the airframe at all. Local legend says that single barrel roll was enough to convince an airline industry skeptical of jet aircraft to open their checkbooks. Boeing -- in the person of Tex Johnston -- changed the world that day.