Originally Posted by
GadgetFreak
…On the subject of ETOPS distances, I was on an LHR-JFK flight where while on the ground at LHR … a mechanical issue with the air conditioning ... changed our ETOPS rating ... 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.
this was probably an ETOPS-120 track, as opposed to ETOPS-180 for either more northerly (likely shorter distance) or more southerly (likely better winds, so shorter flight time)
ETOPS-xxx identifies the number of minutes to the nearest suitable airport after an engine failure