Originally Posted by GadgetFreak

Sorry I didn’t notice that implied directionality.

On the subject of ETOPS distances, I was on an LHR-JFK flight where while on the ground at LHR (out taxiing around) we pulled over and stopped and the pilot told us they had a mechanical issue with the air conditioning. After a while the pilot came back on amd said they checked the manuals for the aircraft and we could do the flight on the backup but it changed our ETOPS rating so we had to do a reroute. We went north over Scotland, then over to Iceland and then over to northern Canada and roughly followed the St. Lawrence River for a bit. I think we came back into the US near Montreal.