I have been paying close attention the my TH with RealSense and I have noticed there is a blast blocking light inside the body that is blue in color and another red one that just seems to be standard power. The blue light flashes like sparks, but it has one other odd behavior, it seems to flash a rate relative to the hight of the drone from the floor. I Can hear the sonic ticking sound and there si a direct proportion to the blue spark like flashes inside the body, the ticking sound and the height. Its very fast when on the ground, and slows as you raise it. I have not been flying it yet, just moving it by hand as I have been testing the compass error condition. I was wondering if anyone else has this and confirm if its normal or some sort of issue. I plan to Call yuneec in the morning before my flights. My first gut reaction was it sparks, but then this regular pattern revealed itself and started to think it just must be a status light inside the body. I have not seem this on my other two drones prior to this one, but I will admit I have not been using them in the dark until today either.