NASA and Boeing were forced once again to call off the first crewed launch of the company’s Starliner spacecraft.
NASA astronauts Barry “Butch” Wilmore and Sunita Williams were scheduled to lift off aboard the Starliner from Florida’s Cape Canaveral Space Force Station on Saturday at 12:25 p.m. ET. The flight to the International Space Station would have been the vehicle’s first with a crew.
The launch attempt was scrubbed with only 3 minutes and 50 seconds to go in the countdown — yet another setback for Boeing, which has already dealt with years of delays and budget overruns with its Starliner program.
The decision to call off the launch was made after an automatic hold was triggered on a computer known as the ground launch sequencer, which controls operations in the final minutes of a launch countdown. It’s not yet known what caused the hold.
Launch scrubs are not uncommon in the world of human spaceflight. For this attempt, there is a backup launch opportunity on Sunday — and others on June 5 and 6 — but it’s unclear whether the capsule and rocket will be ready in time.
In an interview hours before before Saturday’s launch was called off, Sunita Williams’ mother, Bonnie Pandya, told NBC News that her daughter was in good spirits. “She’s very upbeat. She’s so happy about going,” Pandya said. “She loves it.”
This crewed test flight would have been the final step needed for Boeing to show that the Starliner could safely ferry astronauts to and from the space station. A successful mission would have enabled NASA to authorize Boeing to conduct routine trips to the orbiting outpost, thereby giving the agency a long-awaited second option to SpaceX’s Crew Dragon capsule.
Boeing’s last launch attempt on May 6 was also called off, that time with roughly two hours remaining in the countdown, after an issue with a valve was detected in the spacecraft’s Atlas V rocket. A separate helium leak was subsequently discovered in the Starliner’s propulsion system, further delaying the key test flight.
The rocket’s valve was replaced, mission controllers said at a news briefing last week, but the helium leak was not repaired before Saturday’s scheduled flight because it was determined to be unlikely to pose a threat to the crew or the spacecraft.
Both SpaceX and Boeing developed their spacecraft as part of NASA’s Commercial Crew Program. The initiative began more than a decade ago to support private companies in building new space vehicles to take astronauts to low-Earth orbit, following the retirement of the agency’s space shuttles.
But Boeing has fallen significantly behind SpaceX, which has been flying crewed missions to and from the space station for NASA since 2020.
Saturday’s issue is far from the only one the Starliner has faced. Software problems on its first uncrewed flight in 2019 forced mission controllers to cut that trip short before the vehicle could attempt to dock with the space station. A second attempt was then delayed several times due to fuel valve issues. It wasn’t until 2022 that Boeing was able to carry out a successful uncrewed flight to and from the space station.
This is a developing story. Please check back for updates.
This article was originally published on NBCNews.com
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