Learn more about the 777X test variants and how each of them has been used to carry out essential testing.

The Boeing 777X test plane WH004 (N779XZ) has returned to the skies for the first time in over three and a half years. This test aircraft first flew in September 2020 but was grounded in late 2021, ...

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 ...

Boeing (NYSE:BA) restarted test flights Thursday for its 777X widebody jet following a five-month delay, with the first flight since the company grounded the test fleet in August after discovering a ...

Boeing said Monday that it has paused flight tests of its 777X after it found damage in a structure of one of the wide-body aircraft. The company said it discovered the damage to the custom part, ...

Boeing (NYSE:BA) on Monday said it had reached a significant milestone in the development of its long-delayed 777X aircraft. The aviation giant this month began certification testing of the aircraft’s ...

Boeing Co (NYSE:BA) has reportedly restarted testing its long-delayed 777X widebody jet. The company is conducting its first flight since the fleet was grounded in August following a critical engine ...

Innovative testing methods reveal the true power and resilience of the GE9X engine.

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 ...