...I always thought that we were referring to Derelict Airports in Y90. So almost all airports would be eligible because they would have been abandoned for 90 years. Jitter's airport, on Joensuu, is operational these days, as are many other, like Gwenno's Narita, on Tokyo. (and then IDK if Cabo Ruivo wouldn't be eligible because it's not derelict, it ceased to exist (but for the dock).