Weather scrubs are common, and not relevant to the success of a program.
GSE (Ground Servicing Equipment) are fairly common and fairly benign.
Valves on the rocket? Much, much more rare, and usually indicate some form of issue.
GSE (Ground Servicing Equipment) are fairly common and fairly benign.
Valves on the rocket? Much, much more rare, and usually indicate some form of issue.
And to be fair to the starcrossed Starliner, the valve "pressure regulation valve on the liquid oxygen tank of the Atlas 54 rocket‘s Centaur upper stage."
https://spaceflightnow.com/2024/05/07/starliner-launch-scrub...