I'm a 777 pilot, the plane flies fine on one engine. Look up a picture of the GE-90 engines, they're huge and put out a lot of power. You'd divert to the alternate for that portion of the flight. There are multiple alternates going to and from Asia from the U.S. Anchorage, Adak, Shemya, Midway island, Petropavlovsk-Kamchatsky and multiple others as you get over Japan.
A big part of the certification for two engine jetliners to cross the oceans was making sure they're capable of flying a long way on one engine. Losing an engine over the ocean was a big part of the design consideration and there are an unbelievable number of redundancies built into them.
Shemya, Petropavlovsk-Kamchatsky all interesting places with limited R&R
Micronesia IS A HOOT, but you aint landing a 777 there!
I have flown in the 777 from San Francisco to Manila and back, numerous times, on Philippine Airlines. Nice Aircraft. Yes, those GE engines are huge. Is it true the GE NX is more powerful than the GE 90?
Thanks for the reply and assurances. I am retired now but do miss my flights on triple 7’s.