Every flight over an ocean has a set of pre-planned diversion airports.
Yes, but most of them are not viable in the late stages of a flight. Planes aren't carrying enough fuel to cross an ocean for a second time; most don't even have the capacity.
Yes, but most of them are not viable in the late stages of a flight. Planes aren't carrying enough fuel to cross an ocean for a second time; most don't even have the capacity.