The Return to Base (RTB) flight mode uses the full range of sensors available on controller to accurately return to the Home Take Off Location without any pilot input.

This assumes the Home Location is set correctly and previously a basic PositionHold mode works perfectly.

Set the flight mode

Go into Input page > Flight Mode Switch Settings and affect ReturnToBase to one flight mode position.

When engaged, Return to Home Take Off Location in a straight line and stay into Position Hold when it gets there without user input.