A year after Boeing Co. slogged through a deep executive shakeup and prolonged existential crisis, the US planemaker just landed its biggest-ever aircraft order, propelled by a powerful endorsement from President Donald Trump.

The agreement comes as Qatar offered to donate a $400 million 747-8 jumbo jet for President Donald Trump to use as a temporary Air Force One.

Qatar Airways has agreed to buy up to 210 jets from American manufacturing giant Boeing, according to US President Donald Trump, who announced the $96bn order as part of his tour of the Middle East.