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Boeing has yet to submit updated software for the plane's anti-stall device to the Federal Aviation Administration for review. Other regulators then must approve the plane, and that could mean it will return to service at different times in different jurisdictions.

Boeing's orders for new planes fell to a 16-year low in 2019 after two crashes of the 737 MAX killed 346 people and led to the worldwide grounding of the plane, costing the company nearly billion and its title as the world's largest aircraft manufacturer.

Bolsonaro has previously described rainforest protections as an obstacle to economic development, sparring with critics who note that the Amazon produces vast amounts of oxygen and is considered crucial in efforts to contain global warming.

Bohai Commodity Exchange starts trial operations in Tianjin, North China, Oct 31, 2016. [Photo/IC]

Bike share scheme Mobike is teaming up with tech companies Ericsson and China Mobile, to build a global Internet of Things platform.