✈GE completes tests on GEnx-2B upgrades for 747-8
GE Aviation plans to start delivering a durability upgrade in mid-2018 for the engines powering the Boeing 747-8, the engine maker confirms to FlightGlobal.
The engine was used to test the upgraded components that required flight testing to validate their airworthiness, GE says.
https://www.flightglobal.com/news/articles/ge-completes-tests-on-genx-2b-upgrades-for-747-8-446969/