Boeing Calls Off First Astronaut Launch Due To Valve Issue On Rocket

It was discovered an oxygen pressure-relief valve on the Atlas rocket started opening and closing, creating a loud buzz.

Boeing was forced to call off its first astronaut launch Monday night.

Two NASA test pilots were already strapped into Boeing’s Starliner Capsule for a flight to the International Space Station. However, the countdown was halted just two hours before the planned lift-off.

It was discovered an oxygen pressure-relief valve on the Atlas rocket started opening and closing, creating a loud buzz. Investigation and possible repairs pushed the launch into next week.

This marks the latest delay for Boeing’s first crew flight, which has been on hold for years because of capsule issues.