The lack of airports matching that location in the database would be more likely to trigger a warning (with gear down).
GordonR. Yes you're right, I hadn't thought it through properly. I had just that when flying into a new airfield in Africa. Night-time, perfect vis, runway lights in sight. EGPWS started blaring, because it thought we were trying to land in the desert. SOP at night? Go-around. That would have gone down well with management.