What is the threshold for acquiring jus soli? If it's not being born inside the boundary, and it's not touching the soil, by what method does it operate? Again, I am reminded of the Liberal argument for "Instant Personhood" once a child emerges from the womb, but "non personhood" just prior to that time.
Of course the pro-life and jus sanguinius concepts are in complete agreement with each other. (From the moment of conception.) This sudden and wrenching change from one status to another seems to be a sort of ad hoc.
I already explained, the interior of an aircraft in flight is sovereign territory of the nation in which it is registered. If it is an Air France flight, it would be as if the child were born in France. It has nothing to do with the air space in which it is flying.
I have no idea what kind of point you are attempting to make with this "thought experiment."