Boeing Pauses 777 Testing After Engine Issue Written 1 December 2022

GE9X-wiki-250

GE9X engine | Dan Nevill; Wikipedia; CC BY 2.0

FlightGlobal reports that The Boeing Company “has halted its 777-9 flight-test programme due to a problem involving a flight-test aircraft’s GE Aerospace GE9X turbofan, prompting engine evaluations by GE.” Both companies confirm “the flight-test pause but provide few details about the problem, leaving the extent of the issue and its potential impact on the 777-9’s certification timeline unclear.” GE says it “discovered the problem, later found to involve temperatures, following a borescope inspection.” Boeing’s 777-9 certification program “is already substantially delayed, with Boeing most recently – in April – pushing its expected first 777-9 delivery back two years, to 2025.”
Full Story (FlightGlobal)