A new spaceship carrying two NASA astronauts is scheduled to depart for the International Space Station.
In its first test flight with a crew, Boeing’s Starliner is scheduled to take off from Cape Canaveral in Florida.
The spacecraft’s development problems have caused a multi-year delay in the mission.
If it succeeds, it will join Elon Musk’s SpaceX as the second private company capable of providing personnel travel to and from the International Space Station.
NASA now prefers to purchase the service from the business sector rather than own and operate such spacecraft.
On Monday, the planned lift-off time is 22:34 local time (Tuesday, 03:34 BST).
