I have a friend (seriously!) who as a teen (@1978) was on a transatlantic flight. Apparently there was some kind of trouble on board, so the plane needed an emergency landing before arriving in Paris.
What she’s not so sure about (three decades later) is whether the temporary landing spot was in Greenland or Iceland. On one hand, an airport in Greenland would have been closer, but Reykjavik wouldn’t have been much farther, and would seem like a more reliable place.
So. . .
Which would have been a more likely landing spot?