Vertical Integration Facility – Commercial Crew Program

NASA’s Boeing Crew Flight Test Begins Stacking Operations

Photo of Boeing's Starliner that will take NASA astronauts to the International Space Station In May 2024. — Boeing’s Starliner spacecraft, set to carry NASA astronauts Butch Wilmore and Suni Williams on the agency’s Boeing Crew Flight Test to the International Space Station, passes in front of the iconic Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Tuesday, April 16, 2024. Photo credit: NASA/Kim Shiflett

Boeing's Starliner spacecraft is lifted and attached to a United Launch Alliance Atlas V rocket — Boeing’s Starliner spacecraft, set to carry NASA astronauts Butch Wilmore and Suni Williams on the agency’s Boeing Crew Flight Test to the International Space Station, is lifted and stacked on a United Launch Alliance Atlas V rocket at the company’s Vertical Integration Facility at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida Tuesday, April 16, 2024. Photo credit: Boeing

NASA teams joined Boeing on April 16 to move the Starliner spacecraft out of the company’s Commercial Crew and Cargo Processing Facility at the agency’s Kennedy Space Center in Florida to the launch site.

Technicians lifted and connected the spacecraft to the top of a United Launch Alliance Atlas V rocket at the Vertical Integration Facility at Cape Canaveral Space Force Station ahead of NASA’s Boeing Crew Flight Test mission.

NASA astronauts Butch Wilmore and Suni Williams are the first to launch aboard Boeing’s Starliner spacecraft to the International Space Station. Liftoff is scheduled for no earlier than 10:34 p.m. EDT Monday, May 6, from Cape Canaveral’s Space Launch Complex-41. 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.

Wilmore and Williams will wrap up flight preparations in Houston and arrive at NASA Kennedy no earlier than Thursday, April 25.

Learn more about the 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, Boeing Make Progress on Starliner Valve Issue

Boeing engineers continue work at the United Launch Alliance Vertical Integration Facility on the Starliner propulsion system valves. Photo credit: Boeing

NASA and Boeing continued work over the weekend and Monday morning on the company’s CST-100 Starliner spacecraft service module propulsion system in preparation for the Orbital Flight Test-2 mission to the International Space Station.

Work progressed to restore functionality to several valves in the Starliner propulsion system that did not open as designed during the launch countdown for the Aug. 3 launch attempt. The valves connect to thrusters that enable abort and in-orbit maneuvering.

With the United Launch Alliance (ULA) Atlas V and Starliner in the Vertical Integration Facility (VIF) near Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida, engineering teams are able to power on Starliner allowing the vehicle to receive commands, and have direct access to the spacecraft for troubleshooting.

Inside the VIF, Boeing has been able to command seven of 13 valves open that previously were in the closed position. Test teams are applying mechanical, electrical and thermal techniques to prompt the valves to open, and are moving forward with a systematic plan to open the remainder of the affected valves, demonstrate repeatable system performance, and verify the root cause of the issue before returning Starliner to the launch pad for its Orbital Flight Test-2 mission.

Boeing also has completed physical inspections and chemical sampling on the exterior of a number of the affected valves, which indicated no signs of damage or external corrosion.

In the coming days, NASA and Boeing will continue work to bring all affected valves into the proper configuration. If all valve functionality can be restored and root cause identified, NASA will work with Boeing to determine a path to flight for the important uncrewed mission to the space station.

NASA, Boeing and ULA are assessing the potential for several launch opportunities with the earliest available in mid-August. Any launch date options would protect for the planetary window for the agency’s Lucy mission – the first-ever mission to explore Trojan asteroids.

Boeing Starliner Returned to Vertical Integration Facility for Testing

A United Launch Alliance Atlas V rocket with Boeing’s CST-100 Starliner spacecraft onboard is seen near the Vertical Integration Facility at Cape Canaveral Space Force Station in Florida. Photo by NASA/Joel Kowsky

NASA and Boeing are continuing to work through steps to determine what caused the unexpected valve position indications on the CST-100 Starliner propulsion system during the countdown for its Aug. 3 launch attempt.

Now that the United Launch Alliance Atlas V rocket with the Starliner spacecraft on top has been returned to its Vertical Integration Facility (VIF) at Space Launch Complex-41 on Cape Canaveral Space Force Station, engineers will have direct access to Starliner with the assembly of support structures around the spacecraft’s service module for continued troubleshooting.

Boeing will power up Starliner, allowing the vehicle to receive commands providing the teams with real-time data.

The data will drive any corrective measures that may be necessary to ensure Starliner is ready for launch. When NASA’s Commercial Crew Program and Boeing agree the issue is resolved, a new launch opportunity will be selected, taking into account the readiness of all parties involved and the availability of the International Space Station and its crew to support the spacecraft’s arrival.