The 5000E air-driven attitude gyro is another variation of the standard 5000B model. It includes inductive pickoffs that generate the signals necessary to drive an autopilot. The intuitive display has a moving horizon mask that indicates the position of the aircraft’s wings in relation to the natural horizon. This attitude information is passed along to the autopilot system. This is one of Sigmatek's most popular primary instruments. It is FAA approved, and can replace the turn coordinator when equipped with an inclinometer.