When the Boeing B - 17 Flying Fortress was delivered in the late 1930s , it came equipped a commercial Sperry A-3 Autopilot .
The Sperry Gyroscope Company developed many autopilot systems for use on military aircraft .
When the Boeing B - 17 Flying Fortress was delivered in the late 1930s , Sperry Gyroscope Company came equipped a commercial Sperry A-3 Autopilot .
The Sperry Gyroscope Company developed many autopilot systems for use on military aircraft .