The airplane must receive crucial ETOPS certification.

Boeing's flagship aircraft is now around seven years behind schedule.

Boeing received Federal Aviation Administration approval to begin Type Inspection Authorization Phase 4B certification flight testing for the 777X. The authorization marks a key step in the long ...

Boeing has reactivated its fourth 777X testbed aircraft (WH004), bringing all four test airplanes concurrently active for the first time since late 2021. The reactivated WH004 is uniquely configured ...

Add Yahoo as a preferred source to see more of our stories on Google. I toured an experimental Boeing 777X aircraft, which the planemaker is using to certify the new $442 million widebody. See inside.

Boeing said it grounded its fleet of four 777X test fleet after finding damage in one of the jetliner's structures. It wasn't immediately clear whether the problem will delay deliveries of the new ...

SEATTLE (Reuters) - Boeing resumed testing for its long-delayed 777X widebody jet on Thursday, with the first flight since the U.S. planemaker grounded the test fleet in August due to the failure of a ...

“During final load testing on the 777X static test airplane, the team encountered an issue that required suspension of the test,” Boeing spokesman Paul Bergman said in a statement, according to ...

Boeing Co. has paused flight tests of its 777X jetliner while it inspects the four-aircraft fleet for cracking in a crucial structural component that connects the hulking General Electric Co. engines ...

Boeing said Monday that it has grounded its fleet of 777X test aircraft for inspections following discovery over the weekend of a failed component connected to the jet’s engine. After one of the 777X ...

Set to power the world's biggest commercial jet, overcoming the engineering hurdles of this massive engine pushed its launch ...