I feel like I'm being baited to say that a plane doesn't fly through space. Bandwidth is fairly constrained, but not so much so that it's going to meaningfully affect EQ. QoS will make sure you have a big enough slice of the available bandwidth to accommodate EQ. Plane to ground isn't much more high latency than cell phone to tower. On a plane, for plane to ground networks, you're not going to be more than 10s of miles from a ground station. Regardless of how far a cell phone signal could reach (which is essentially infinity in space if you place the antenna at the focal point of a parabolic reflector), it's constrained by the tight timing required by the protocols. Light travels really really fast, so 10s of miles isn't going to affect latency much at all. Satellite based internet can have a large latency, but it's still sub second. You've admitted you're old, so I'm going to assume you're thinking of experiences you had with the first satellite internet networks. These used satellites in geostationary orbits, which means, they were 22,236 miles away. It takes a signal roughly 250ms to reach a satellite and another 250ms for it to return. Modern satellite internet uses a cluster of satellites in low earth orbit (leo) or medium earth orbit (meo). One way latency to leo is ~20ms and meo is ~50ms. A piece of networking technology that changes one type of signal to another or changes the medium in which signal propagates is called a bridge. Undoubtedly, there is a router on the plane, and it may very well be physically integrated with the bridge, but the relevant piece of equipment that transforms the WiFi signal to something with a greater range is a bridge. A transponder is a piece of equipment that receives a signal and reacts by sending another signal, even if these signals are of the same type and along the same medium. What exactly did you do when you worked for that vendor?