“A US carrier would not typically fly any distance with one engine shut down,” says the FAA. This would not necessarily mean the crew would land at the nearest airport, the agency says, because the captain could reasonably take into account the feasibility of reaching “a base where the [failed] engine could be looked at”.
LHR for instance.
and the agency says its only concern is “the safety of aircraft operating in our airspace”.
So they don't give a damn what happens over Canada, NAT or UK/Eire then?