Boeing, the US aircraft giant, has conducted 500 test flights on its suspended 737 Max aircraft after upgrading its program.
Sky News said on Tuesday that the company would restore confidence to its suspended aircraft since March, when Boeing plans to apply to the US Federal Aviation Administration in September to return the plane to resume the service in the fourth quarter of 2019.
Boeing has allocated about $ 5 billion to cover the losses caused by the stop (737 Max).
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