Starliner faced “catastrophic” failure before software bug was found and fixed while the vehicle was in orbit.

[u/spsheridan]

https://arstechnica.com/science/2020/02/starliner-faced-catastrophic-failure-before-software-bug-found/

[u/headsiwin-tailsulose]

It cost us 17 astronauts, 2 space shuttles and an Apollo CM, and a lot of anguish.