tdracer
While you are correct within the context of design by a subcontractor, I suspect the "powers that be", will consider Boeing as the prime contractor and therefore responsible.
If I have a problem with the oil pump in my new car, I will not accept the supplier of my car saying it is not our problem because we did not design the oil pump. It may have been supplied to the manufacturer for inclusion in their final product. But to me, the supplier of my new car is at fault.
IG