Starliner Returning to Factory to Resolve Valve Issue

Today, Boeing informed NASA that the company will destack its CST-100 Starliner from the Atlas V rocket and return the spacecraft to the Commercial Crew and Cargo Processing Facility (C3PF) for deeper-level troubleshooting of four propulsion system valves that remain closed after last Tuesday’s scrubbed launch.

Starliner has sat atop the Atlas V rocket in ULA’s Vertical Integration Facility since August 4, where Boeing teams have worked to restore functionality to the affected valves.

The relocation of the spacecraft to the C3PF will require Boeing, NASA and United Launch Alliance to agree on a new launch date once the valve issue is resolved.

“Mission success in human spaceflight depends on thousands of factors coming together at the right time,” said John Vollmer, vice president and program manager, Boeing’s Commercial Crew Program. “We’ll continue to work the issue from the Starliner factory and have decided to stand down for this launch window to make way for other national priority missions.”