Boeing Astronaut Capsule Grounded for Months by Valve Issue

Technicians prepare Boeing's CST-100 Starliner for the company's Orbital Flight Test-2 (OFT-2) in the Commercial Crew and Cargo Processing Facility at NASA's Kennedy Space Center in Florida, on June 2, 2021. NASA via AP

CAPE CANAVERAL, Fla.—Boeing’s astronaut capsule is grounded for months and possibly even until next year because of a vexing valve problem.

Boeing and NASA officials said Friday that the Starliner capsule will be removed from the top of its rocket and returned to its Kennedy Space Center hangar for more extensive repairs.