Kennedy Space Center - Space Station

NASA, Boeing Now Working Toward May 25 Launch of Crew Flight Test

A United Launch Alliance Atlas V rocket with Boeing’s Starliner spacecraft aboard is seen on the launch pad illuminated by spotlights at Space Launch Complex 41 on Sunday, May 5, 2024. Photo Credit: NASA/Joel Kowsky

NASA, Boeing, and ULA (United Launch Alliance) teams will take additional time to work through spacecraft closeout processes and flight rationale before proceeding with the launch of the agency’s Boeing Crew Flight Test. The teams now are targeting a launch no earlier than 3:09 p.m. EDT Saturday, May 25, for the flight test carrying NASA astronauts Butch Wilmore and Suni Williams to the International Space Station.

The additional time allows teams to further assess a small helium leak in the Boeing Starliner spacecraft’s service module traced to a flange on a single reaction control system thruster. Pressure testing performed on May 15 on the spacecraft’s helium system showed the leak in the flange is stable and would not pose a risk at that level during the flight. The testing also indicated the rest of the thruster system is sealed effectively across the entire service module. Boeing teams are working to develop operational procedures to ensure the system retains sufficient performance capability and appropriate redundancy during the flight. As that work proceeds, NASA’s Commercial Crew Program and the International Space Station Program will take the next few days to review the data and procedures to make a final determination before proceeding to flight countdown.

The ULA Atlas V rocket and Boeing’s Starliner remain in the Vertical Integration Facility at Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida. The NASA, Boeing, and ULA teams remain committed to ensuring a safe Starliner flight test.

Wilmore and Williams will remain quarantined in Houston as prelaunch operations progress. They will fly back to NASA’s Kennedy Space Center in Florida closer to the new launch date. The duo is the first to launch aboard Starliner to the space station as part of the agency’s Commercial Crew Program. The astronauts will spend about a week at the orbiting laboratory before returning to Earth and making a parachute and airbag-assisted landing in the southwestern United States.

After successful completion of the mission, NASA will begin the final process of certifying Starliner and its systems for crewed rotation missions to the space station.

NASA’s Boeing Crew Flight Test Eyes Next Launch Opportunity

United Launch Alliance's Atlas V rocket with Boeing Starliner's spacecraft atop at Space Launch Complex-41 ahead of NASA's Boeing Crew Flight Test. — A United Launch Alliance Atlas V rocket with Boeing’s CST-100 Starliner spacecraft aboard is seen as it is rolled out of the Vertical Integration Facility to the launch pad at Space Launch Complex 41 ahead of the NASA’s Boeing Crew Flight Test, Saturday, May 4, 2024 at Cape Canaveral Space Force Station in Florida. Photo credit: NASA/Joel Kowsky

NASA, Boeing, and ULA (United Launch Alliance) teams continue working remaining open tasks in preparation for the agency’s Boeing Crew Flight Test to the International Space Station. The teams now are targeting a launch date of no earlier than 4:43 p.m. EDT on Tuesday, May 21, to complete additional testing.

On May 11, the ULA team successfully replaced a pressure regulation valve on the liquid oxygen tank on the Atlas V rocket’s Centaur upper stage. The team also performed re-pressurization and system purges, and tested the new valve, which performed normally.

Starliner teams are working to resolve a small helium leak detected in the spacecraft’s service module traced to a flange on a single reaction control system thruster. Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic.

NASA and Boeing are developing spacecraft testing and operational solutions to address the issue. As a part of the testing, Boeing will bring the propulsion system up to flight pressurization just as it does prior to launch, and then allow the helium system to vent naturally to validate existing data and strengthen flight rationale. Mission teams also completed a thorough review of the data from the May 6 launch attempt and are not tracking any other issues.

The Atlas V and Starliner remain in the Vertical Integration Facility at Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida.

NASA astronauts Butch Wilmore and Suni Williams, still in preflight quarantine, returned to Houston on May 10 to spend extra time with their families as prelaunch operations progress. The duo will fly back to NASA’s Kennedy Space Center in Florida in the coming days.

Wilmore and Williams are the first to launch aboard Boeing’s Starliner to the space station as part of the agency’s Commercial Crew Program. The astronauts will spend about a week at the orbiting laboratory before returning to Earth and making a parachute and airbag-assisted landing in the southwestern United States.

After successful completion of the mission, NASA will begin the final process of certifying Starliner and its systems for crewed rotation missions to the space station.

NASA’s Boeing Crew Flight Test Targets New Launch Date

A rocket with a spacecraft atop stand in the center of the image illuminated by spotlights against a dark sunset sky. — A United Launch Alliance Atlas V rocket with Boeing’s Starliner spacecraft atop illuminated by spotlights on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida is photographed ahead of the NASA’s Boeing Crew Flight Test, the first Starliner mission to send astronauts to the International Space Station as part of the agency’s Commercial Crew Program. Photo credit: NASA/ Joel Kowsky

NASA’s Boeing Crew Flight Test now is targeted to launch no earlier than 6:16 p.m. EDT Friday, May 17, to the International Space Station. Following a thorough data review completed on Tuesday, ULA (United Launch Alliance) decided to replace a pressure regulation valve on the liquid oxygen tank on the Atlas V rocket’s Centaur upper stage.

ULA plans to roll the rocket, with Boeing’s Starliner spacecraft, back to its Vertical Integration Facility at Cape Canaveral Space Force Station in Florida on Wednesday, May 8, to begin the replacement. The ULA team will perform leak checks and functional checkouts in support of the next launch attempt.

The oscillating behavior of the valve during prelaunch operations, ultimately resulted in mission teams calling a launch scrub on May 6. After the ground crews and astronauts Butch Wilmore and Suni Williams safely exited from Space Launch Complex-41, the ULA team successfully commanded the valve closed and the oscillations were temporarily dampened. The oscillations then re-occurred twice during fuel removal operations. After evaluating the valve history, data signatures from the launch attempt, and assessing the risks relative to continued use, the ULA team determined the valve exceeded its qualification and mission managers agreed to remove and replace the valve.

Mission managers discussed the details leading to the decision to scrub the May 6 launch opportunity during a news conference shortly after the scrub call at NASA’s Kennedy Space Center in Florida.

Wilmore and Williams will remain in crew quarters at NASA Kennedy in quarantine until the next launch opportunity. The duo will be the first to launch aboard Starliner to the space station as part of the agency’s Commercial Crew Program.

NASA, Boeing to Update Media on Starliner Crew Flight Test Tonight

A United Launch Alliance Atlas V rocket with Boeing’s Starliner spacecraft aboard is seen on the launch pad at Space Launch Complex-41 on Sunday, May 5, 2024 at Cape Canaveral Space Force Station in Florida. Photo Credit: NASA/Joel Kowsky

NASA, Boeing, and United Launch Alliance will host a news conference at 10:30 p.m. EDT to discuss Monday’s scrubbed launch attempt of the agency’s Crew Flight Test due to a faulty oxygen relief valve observation on the United Launch Alliance Atlas V rocket Centaur second stage. NASA astronauts Butch Wilmore and Suni Williams exited the Starliner spacecraft at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida and returned to astronaut crew quarters.

NASA will provide news conference coverage on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website.

The following will participate in the news conference:

Ken Bowersox, associate administrator, NASA’s Space Operations Mission Directorate
Steve Stich, manager, NASA’s Commercial Crew Program
Dana Weigel, manager, International Space Station Program at NASA
Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing
Tory Bruno, president and CEO, United Launch Alliance

Learn more about NASA’s Boeing Crew Flight Test by following the mission blog, the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.

NASA Astronaut Continues Legacy of Discovery, Adventure with Starliner Calypso

From left to right, NASA astronauts Suni Williams and Butch Wilmore pose in front of Boeing’s Starliner spacecraft in the early morning of Tuesday, April 16, 2024, outside the company’s Commercial Crew and Cargo Processing Facility at the agency’s Kennedy Space Center in Florida. The spacecraft will take the astronauts to the International Space Station as part of the agency’s Boeing Crew Flight Test no earlier than Monday, May 6, 2024. Photo credit: NASA/Kim Shiflett

NASA astronauts Butch Wilmore and Suni Williams will be the first to fly aboard Boeing’s Starliner spacecraft to the International Space Station, and the name of the spacecraft ferrying them to the orbiting laboratory holds a special place in Williams’ heart.

Williams named the crew capsule Calypso in 2019 to pay tribute to the explorer Jacques Cousteau, who sailed across the world on his own ship named bearing the same name. Cousteau’s goal was to learn about the ocean and teach others about the wonders of the sea. Williams believes Starliner can do the same for space.

The Starliner spacecraft, with a diameter of 15 feet (4.56 meters), can carry up to four astronauts, or a mix of crew and cargo, for NASA missions to low Earth orbit for the agency’s Commercial Crew Program.

The spacecraft, on a United Launch Alliance Atlas V rocket, is scheduled for liftoff at 10:34 p.m. EDT Monday, May 6, from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida.

NASA and Boeing ‘Go’ for Crew Flight Test Mission

Officials from NASA, Boeing, ULA (United Launch Alliance) , and the U.S. Space Force 45th Weather Squadron participate in a prelaunch briefing for NASA’s Boeing Crew Flight Test at the agency’s Kennedy Space Center in Florida, Friday, May 3, 2024. Photo credit: NASA

NASA, Boeing, and ULA (United Launch Alliance) officials discussed final prelaunch details to send two astronauts aboard Boeing’s Starliner spacecraft to the International Space Station as the first crewed flight for Starliner. The prelaunch news conference finished at NASA’s Kennedy Space Center in Florida.

“We are going to have a whole new adventure. This is very much a part of our exploration of space and what I call the ‘golden age of space exploration,’” said NASA Administrator Bill Nelson. “It’s a historical day. It’s a wonderful day.”

Officials provided updates to the countdown of the 10:34 p.m. EDT Monday, May 6, launch of NASA astronauts Butch Wilmore, commander, and Suni Williams, pilot, on the Starliner spacecraft as part of NASA’s Boeing Crew Flight Test mission. The crew is set to dock at the space station on Wednesday, May 8, for about a week-long stay before returning to Earth with a parachute and airbag-assisted landing in the southwestern United States.

“It’s exciting to bring Starliner and a United launch Alliance Atlas vehicle online,” said Steve Stich, manager, NASA’s Commercial Crew Program. “We have been striving for commercial crew to have two independent space transportation systems. That’s been our goal from commercial crew since its inception, and we’re very close to reaching that goal with the launch on Monday.”

Brian Cizek, launch weather officer with the 45th Weather Squadron, predicts a 95% chance of favorable weather conditions for launch, with the cumulus cloud rule being the primary weather concern.

“I couldn’t be more proud of this team. We’re at peak performance right now and we are really excited to execute this launch. We’re ready to go,” said Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing.

At 3:30 p.m., NASA will host a social media briefing with the following participants:

NASA Associate Administrator Jim Free
Ian Kappes, deputy launch vehicle office manager, NASA’s Commercial Crew Program
Amy Comeau Denker, Starliner associate chief engineer, Boeing
Caleb Weiss, system engineering and test leader, ULA
Jennifer Buchli, chief scientist, NASA’s International Space Station Program

NASA will provide coverage of the social media briefing on Kennedy’s Facebook, X, and YouTube accounts.

On Saturday, May 4, the ULA Atlas V rocket and Starliner spacecraft will roll out to the pad at Space Launch Complex-41 at Cape Canaveral Space Force Station. Launch is scheduled for 10:34 p.m. Monday, May 6.

Here is a list of other upcoming events leading up to the mission.

Learn more about NASA’s Boeing Crew Flight Test by following the mission blog, the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.

NASA to Hold Prelaunch News Conference Following ULA Launch Readiness Review

The Boeing Starliner spacecraft is lifted at the Vertical Integration Facility at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Tuesday, April 16, 2024. Photo credit: NASA/Kim Shiflett

Plans to send two NASA astronauts aboard Boeing’s Starliner spacecraft on a United Launch Alliance (ULA) Atlas V rocket early next week remain on track.

ULA completed its Launch Readiness Review on May 3 and gave a “go” to proceed toward launch at 10:34 p.m. EDT Monday, May 6, from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida.

Teams at ULA assessed the readiness of the rocket, discussed the pre-flight work, reviewed launch day operations, and previewed the early weather forecast.

NASA’s Boeing Crew Flight Test will launch NASA astronauts Butch Wilmore and Suni Williams on Starliner for about a week-long mission to the International Space Station, culminating with a parachute landing in the southwestern United States.

At 12:30 p.m., NASA will host its prelaunch news conference with the following participants:

NASA Administrator Bill Nelson
Steve Stich, manager, NASA’s Commercial Crew Program
Dana Weigel, manager, NASA’s International Space Station Program
Jennifer Buchli, chief scientist, NASA’s International Space Station Program
Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing
Gary Wentz, vice president, Government and Commercial Programs, ULA
Brian Cizek, launch weather officer, 45th Weather Squadron, Cape Canaveral Space Force Station

The prelaunch news conference air live on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website. Learn how to stream NASA TV through a variety of platforms including social media.

Here is a list of other upcoming events leading up to the mission.

Learn more about NASA’s Boeing Crew Flight Test by following the mission blog, the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.

NASA Flight Test Readiness Review Concludes, Teleconference to Follow

Mission managers with NASA, Boeing, and United Launch Alliance gather on Thursday, April 25, 2024, at the agency’s Kennedy Space Center in Florida to complete a Flight Test Readiness Review for NASA’s Boeing Crew Flight Test. Photo credit: NASA/Mike Chambers

NASA concluded its Flight Test Readiness Review for the agency’s Boeing Crew Flight Test and teams are proceeding toward a planned launch at 10:34 p.m. EDT on Monday, May 6, to the International Space Station. The mission will transport NASA astronauts Butch Wilmore and Suni Williams to and from the space station of the first flight with crew to certify the Starliner and its system for regular crew rotation missions.

At 4:30 p.m., NASA will host a media teleconference (no less than one hour following completion of the readiness review) with the following participants:

Jim Free, NASA associate administrator
Ken Bowersox, associate administrator, NASA’s Space Operations Mission Directorate
Steve Stich, manager, NASA’s Commercial Crew Program
Dana Weigel, manager, NASA’s International Space Station Program
Mark Nappi, vice president and manager, Boeing Commercial Crew Program
Emily Nelson, NASA chief flight director

The media teleconference will air live on the agency’s website.

Next up is a mission dress rehearsal on Friday, April 26, for NASA, Boeing, and ULA (United Launch Alliance). Wilmore and Williams, commander and pilot, will mimic launch day operations. The astronauts load in their spacesuits, walk out of the Neil A. Armstrong Operations and Checkout Building, and get into Boeing’s Astrovan to travel to the spacecraft. Teams will practice countdown scenarios, prep Starliner’s crew module for flight, close the hatch, and conduct readiness polls of managers and engineers.

Wilmore and Williams are the first to launch aboard Boeing’s Starliner on an Atlas V rocket. The astronauts will spend about a week at the orbiting laboratory before the crew capsule makes a parachute and airbag-assisted landing in the southwestern United States.

After successful completion of the mission, NASA will begin the final process of certifying Starliner and its systems for crewed rotation missions to the space station. The Starliner capsule, with a diameter of 15 feet (4.56m) and the capability to steer automatically or manually, will carry four astronauts, or a mix of crew and cargo, for NASA missions to low Earth orbit.

Learn more about NASA’s Boeing Crew Flight Test by following the mission blog, the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.

Dreams Become Reality for NASA’s Boeing Flight Test Crew

NASA astronauts Butch Wilmore and Suni Williams hug after arriving at the Launch and Landing Facility at the agency’s Kennedy Space Center in Florida on Thursday, April 25, 2024. Photo credit: NASA/Chris Stevens

Momentum is building for NASA’s Boeing Crew Flight Test launch, scheduled for Monday, May 6, 2024.

NASA astronauts Butch Wilmore and Suni Williams arrived in a T-38 jet April 25 at the Launch and Landing Facility at the agency’s Kennedy Space Center in Florida after a short flight from Ellington Field near NASA’s Johnson Space Center in Houston.

NASA leaders welcomed Wilmore and Williams and held a short news conference.

“Our hearts and souls are in this spacecraft and a little part of us will be lifting off with Butch and Suni,” said NASA’s Commercial Crew Program Deputy Manager Dana Hutcherson, who has been with the program for 13 years.

Wilmore and Williams are targeting 10:34 p.m. EDT Monday, May 6, for launch aboard Boeing’s Starliner spacecraft and ULA’s (United Launch Alliance) Atlas V rocket from Space Launch Complex-41 at nearby Cape Canaveral Space Force Station. This will be the first crewed flight of Starliner for NASA’s Commercial Crew Program.

Click below to watch the earlier broadcast of the welcome ceremony.

NASA’s Boeing Crew Flight Test Astronauts Enter Quarantine for Mission

NASA's Boeing Crew Flight Test astronauts Suni Williams (left) and Butch Wilmore (right) pose for photo ahead of May 6 flight to the International Space Station — The official crew portrait for NASA’s Boeing Crew Flight Test. Left is Suni Williams, who will serve as the pilot, and to the right is Barry “Butch” Wilmore, spacecraft commander. Photo credit: NASA

NASA astronauts Butch Wilmore and Suni Williams, who are set to launch to the International Space Station on Monday, May 6, entered pre-flight quarantine in preparation for the agency’s Boeing Crew Flight Test mission.

Flight crew health stabilization is a standard process ahead of any human spaceflight mission to ensure the health and safety of the crew prior to liftoff, as well as prevent sickness of the astronauts at the space station. During quarantine, astronaut contact is limited, and most interactions are remote – although family and some launch team members also may be in quarantine or cleared before interacting with the crew.

Wilmore and Williams will launch aboard Boeing’s Starliner spacecraft on a ULA (United Launch Alliance) Atlas V rocket from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida as part of NASA’s Commercial Crew Program. The duo will make history as the first people to fly on the Starliner spacecraft.

Wilmore and Williams will quarantine at NASA’s Johnson Space Center in Houston before traveling to the agency’s Kennedy Space Center in Florida no earlier than Thursday, April 25, where they’ll remain in quarantine until launch.

Meanwhile, teams also are preparing for the Flight Test Readiness Review, which will take place over the course of two days – Wednesday, April 24, and April 25. That review brings together teams from NASA, Boeing, ULA, and its international partners to verify mission readiness including all systems, facilities, and teams that will support the end-to-end test of the Starliner.

Following a successful flight test, NASA will begin certifying the Starliner system for regular crew rotation missions to space station for the agency.

Launch is scheduled no earlier than 10:34 p.m. EDT May 6.

Learn more about NASA’s Boeing Crew Flight Test by following the mission blog, the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.

Learn more about station activities by following the space station blog, @space_station and ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.