Boeing geared up again Wednesday for its first astronaut launch, held up for years by safety concerns.
It was the third launch attempt for NASA test pilots Butch Wilmore and Suni Williams in Boeing's Starliner capsule. Rocket-related trouble thwarted the first two countdowns.
Live: Watch the #Starliner Crew Flight Test launch from @ulalaunch Space Launch Complex-41. Liftoff is scheduled for 10:52 a.m. ET.
— Boeing Space (@BoeingSpace) June 5, 2024
Starliner is headed to the @Space_Station with @NASA_Astronauts spacecraft commander Butch Wilmore and pilot @Astro_Suni. https://t.co/97HcvjYVrn
NASA hired Boeing along with SpaceX after the space shuttles retired to transport astronauts to and from the space station. SpaceX has been ferrying astronauts since 2020.
Boeing's capsule rocketed into orbit in 2019 without a crew, but that test flight was cut short by software problems. Boeing had better luck on the do-over mission in 2022, but parachute and other issues later were discovered, delaying Starliner's crew debut even further.
Minutes before Saturday's planned liftoff, a computer's power unit failed at the pad that had to be replaced by rocket maker United Launch Alliance. And a bad valve inside the Atlas V rocket scrapped the launch attempt in early May.