Boeing to ground Starliner indefinitely until valve issue solved

Enlarge / Close-up of the Boeing CST-100 Starliner capsule, white room attached, atop the mighty Atlas V launch vehicle at Cape Canaveral’s SLC-41.Trevor Mahlmann

Boeing said Friday that its Starliner spacecraft will be grounded indefinitely while it continues to investigate problems with the valves in the propulsion system.

In the 10 days since Boeing and NASA scrubbed the launch in Florida, technicians and engineers have sought to open 13 valves that control the flow of dinitrogen tetroxide (NTO) oxidizer through the service module of the spacecraft. There are 24 oxidizer valves in the propulsion system, which is critical both for in-space travel as well

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