The plane, the best-selling plane in Boeing ( fleet, was grounded in March 2019 after two fatal crashes that killed 346 people. It was found that a protective function designed to stop the plane from climbing too fast, and stagnation improperly caused the nose of the plane to lead to crashes. )
The process of approving the passenger plane took more than a year longer than originally expected and cost Boeing more than $ 20 billion, according to the company. Lost orders for the aircraft during this time can make it one of the most costly mistakes ever made by a company.
Although approval was expected this week, Boeing ( shares, however, rose 5% in pre-trading on Wednesday. )