The incidents in which engines shut down during flight occurred in February and on May 9, GE said. One of the incidents occurred on an Air China plane. The other could not immediately be identified.
In both cases, only one engine shut down, and the twin-engine 777 is able to continue flight with the remaining engine.
"You don't have a fire, you don't have an explosion," when the gearbox fails, said Rick Kennedy, a GE spokesman.
While the cause of the failures remains unknown, the FAA is expected to make the inspections mandatory through an Airworthiness Directive. The FAA did not respond to requests for comment
My bold above. This kinda puts it more apt in the Rumours & News thread since there is very little to discuss here until somebody knows what started it and is working on a fix.
At least with the 787 battery problem they fixed it by isolating the battery from affecting the rest of the aircraft. Hard to do with an engine gearbox.