Sounds easy then. Declare it as his property when he comes to visit. Just for verification, have him get his TRUST certificate.
Hey, if he forgets to take his drone home, maybe he'll let you use it til he comes back for it.
We're talking airspeed, the drone's speed through the air. It doesn't matter whether the air is moving or not. If the drone is stationary over the ground with a 20 mph wind blowing, the drone's airspeed is 20 mph.
That makes a lot of sense, as the majority of purchasers of Korean eBay offerings are likely South Korean, and the box says FCC all over it, but in Korea, it's range will still be limited to CE and only 15km. Those FCC/CE disclosures are likely...