https://arstechnica.com/science/2021/09/boeing-still-troubleshooting-starliner-may-swap-out-service-module/
9/22/2021
Nearly six weeks have passed since Boeing said it would de-stack its Starliner
spacecraft from an Atlas V rocket and return the vehicle to its factory for
"deeper-level" troubleshooting of problematic valves.
On Tuesday, NASA's chief of human spaceflight operations, Kathy Lueders,
said teams of engineers and technicians from Boeing and NASA are continuing
to assess the issue with sticky valves.
"I think the team's making great progress on further troubleshooting," she said.
Translation >> They have no Idea what they’re doing or even looking for.
In early August after 13 valves that control the flow of
dinitrogen tetroxide oxidizer
through the service module of the spacecraft malfunctioned.
There are 24 oxidizer valves in the propulsion system,
which is critical both for in-space travel as well as launch emergency escapes.
During investigations on the launch pad, technicians were able to open some
but not all of the valves.
Hint: Don’t use Aluminum valve body’s with (N2O4)
Since returning Scгapliner to Boeing's Commercial Crew and Cargo Processing
Facility in Florida, engineers have been able to gather data about the "dry" side
of the valves, but they may need to remove the valves from the spacecraft to
assess the "wet" side, Lueders said. This would be a cumbersome process.
WOW; do you Think / >> Take the valves apart you mechanically iոept dwҽҽbs.