I don’t think they actually flew that course.
It would run out of fuel before it got to the end................
The inference of the article was that the flight was to demonstrate the performance of the aircraft flying on a single engine.
Which begs the question, probably known to ferry pilots faced with a long flight. I used to argue with my maintenance officer that I could extend the range and ferry distance of a CH-47, if we but just shut down one engine, fly at lower airspeed, yet extend our distance and of course time enroute. I was told I could not do it, as it was en emergency condition. I argued back that I must have been in an emergency every time I flew a single engine Huey.
With one engine out, only half the fuel is being consumed. Adjust for some lack of performance and the range should be increased.
So you are saying this is fake?
The 787-900 has a range from 8000 to 8500 miles depending on load for in this in-flight testing mission was done with a very light load. They finsihed this with plenty of fuel left over.
The 787 has a range of over 9000 miles. I’m sure someone at Boeing Flight Test did the math before they took off.