US President Donald Trump on Wednesday announced a plan to ground all Boeing 737 MAX aircraft amid intense international and political pressure following the second deadly crash in less than five months.

"We're going to be issuing an emergency order of prohibition regarding all flights of the 737 MAX 8 and 737 MAX 9," Trump told reporters the White House.

The US decision comes a day after aviation authorities all over the world also banned the aircraft following a crash in Ethiopia.

The Ethiopian Airlines crash on Sunday happened minutes into a flight to Nairobi, killing all 157 people on board. It came after a Lion Air jet of the same model crashed in Indonesia in October, killing 189.

Investigators have recovered the black box flight recorders from the Ethiopian Airlines plane, which went down near Addis Ababa carrying passengers and crew from 35 countries -- including some two dozen UN staff. 

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