Boeing has been forced to ground its entire 777X test fleet due to a failed engine component - the latest in a series of blows to the embattled manufacturer. The 777X, Boeing's latest and most state-of-the-art aircraft, first took to the sky in 2020 but faced delays in certification by the Federal Aviation Administration... The FAA this summer gave the plane the go-ahead for test flights needed before launching passenger service. Boeing had planned to deliver the fleet in 2025, but the discovery of a failed component connected to the jet's engine has some buyers not expecting the jet until...