So far, at least according to reports, only on RR powerplants. Hmmmmmm
I wonder if we will hear about any problems with the other powerplant options.
Powerplant (777-200) two Pratt & Whitney PW4077 turbofans
or two Rolls-Royce Trent 877 turbofans
or two General Electric GE90-77B turbofans
(777-200ER) two Pratt & Whitney PW4084/PW4090 turbofans
or two Rolls-Royce Trent 884/892/895 turbofans
or two General Electric GE90-85B/92B/94B turbofans
(777-200LR) two General Electric GE90-110B1 turbofans
(777-300) two Pratt & Whitney PW4098 turbofans
or two Rolls-Royce Trent 892 turbofans
(777-300ER) two General Electric GE90-115B turbofans