posted on May, 19 2008 @ 12:00 PM
reply to post by primamateria
prima, a minor correction re: the B777
Yes, a good airplane...but not the only twin-jet that can continue across an ocean on one engine!!
you are referring to 'ETOPS' ...."Extended Twin Engine Operations"....
It was the increasing reliablity in engine design and operation that allowed twin-jets to, gradually, be approved for longer and longer over-water
flights.....it started, firstly, with '60-minute' ETOPS, then to '120 minute' ETOPS...then, under pressure from certain airlines, because it was
needed on certain routes....the '138 minute' ETOPS
In ETOPS there is always an alternate airport, within the various radii, in the event of an engine failure. If, for instance, on a flight from NYC to
Paris, and an engine fails mid-Atlantic....it would be highly questionable to continue (and in the case of the FAA, against regulations) to continue
to Paris....you will divert to Iceland, or Greenland....or, if closer, you will go back to Gander, NFLD....or continue to the UK....depends on which
airport is closest, in point-of-time (takes wind into account as well).