How can Goose not have been an option given their position ?
Two 10,000 foot runways at right angles. Established transatlantic diversion point. Benign midsummer weather on the day in question. Flat terrain. Full set of lighting for night ops. And looking at their track they appear to have been routing overhead it. Obviously, given what subsequently happened at Gander, ground facilities (for it is equally remote) for pax were not taken into account.
Not a criticism; I'd like to know.