Surely a 747 with one engine safely secured, is as safe as a 777 with all engines running. I shut an engine down while flying a B744 ,just short of mid Atlantic, and carried on safely to London. A 777 or similar would have gone to Gander or Shannon. All systems available, fuel consumption not much changed, landing limits not changed CatIII still available. And still flies quite well if a second one stops!!
Can't see anything wrong in a well planned continued flight on three.
Last edited by cessnapete; 5th Aug 2015 at 18:18.