If you want to land 99.9% of the time, it really is te 99.9% circle you should be looking at... Or in fact, you need even better than that, since you don't wan

If you want to land 99.9% of the time, it really is te 99.9% circle you should be looking at... Or in fact, you need even better than that, since you don't want your whole error budget used up by the GNSS system.