Boeing announced Saturday it has suspended testing of its new 777x aircraft.

The Seattle Times said the aircraft's door exploded outward during a recent high-pressure stress test on the ground.

The company earlier reported a delay on its 777X widebody program as General Electric Co engine problems pushed the first flight into 2020.

Boeing has also been unable to deliver any of its 737 MAX aircraft since the single-aisle plane was grounded worldwide in March after two fatal crashes in Indonesia and Ethiopia killed 346 people.

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(Reuters) - Boeing Co on Saturday announced it had suspended testing of its new widebody 777X aircraft as media reports said a cargo door failed in a ground stress test.

"During final load testing on the 777X static test airplane, the team encountered an issue that required suspension of the test," a Boeing spokesman said in a statement.

The Seattle Times said a cargo door exploded outward during a high-pressure stress test on the ground. The newspaper said the accident occurred on a static test airplane, which is built for ground testing only and not intended to fly. The problem happened during the final test that must be passed as part of the plane's certification by the Federal Aviation Administration, the report said.

In final load testing, planes are subjected to loads and stresses that are well beyond normal operational conditions, the company spokesman said, adding that the incident is under review.

The company earlier reported a delay on its 777X widebody program as General Electric Co engine problems pushed the first flight into 2020.

Chicago-based Boeing has also been unable to deliver any of its 737 MAX aircraft since the single-aisle plane was grounded worldwide in March after two fatal crashes in Indonesia and Ethiopia killed 346 people.

(Reporting by Akshay Balan in Bengaluru and Eric M Johnson in Seattle; Editing by Cynthia Osterman)