Good find but at around 1/4 of the price this unit is used by many jet modellers here in Victoria and although its Chinese the quality is well proven as a standard jet model starts at over $10000 and believe me these guys don't take chances. Another interesting fact is that Graupner has a simular system built into there receivers that also do FBL.
The main functions of FY-31AP
• Auto balance — When stabilization is activated, the FY31AP will automatically control the aircraft for smooth easy flying. For beginners in RC aircraft flying, this is advantages as it makes flight easier and increases the student pilot self-confidence. The system can be activated throughout the entire flight duration, from take off to landing.
• Path navigation flight — with the GPS module the autonomous flight system of the FY31AP will enable you to fly fully autonomous, with up to 20 waypoints settings on the FY Ground Control Station software.
• Return to Home — Use with the GPS, you can set autonomous return to home via a 3 way switch or through your failsafe setting, enabling you plane returning to home should it lose your transmitter signal. Upon reaching the home point it will automatically engage auto circling, while it waits for your further instructions.
• Automated circling — Use with the GPS, by activating this function, the aircraft will automatically circle the selected area at a fixed altitude, the centre of the circle is the current point. You can set the circling radius, the default radius is 80 meters.
• Fixed altitude and Heading lock flight Mode — After connecting the GPS module direction,the FY-31AP can control the aircraft to fly straightly in fixed altitude ,and lock the flight course.
• Ground Control Station — The FY GCS software will enable you to fly autonomously to up to 8 waypoints, display in-flight telemetry data, and record that flight for replay and analysis (this requires the optional Data Radio hardware).

 

Thats very very true @Fredo in the jets everything has to be 110 percent. Im going to have a look at the specs on this unit! thanks for that...