Originally Posted by
EDLB
You need a DAL A system for this. If developed early enough clearly possible with special hardware. However Boeing tried to get away with a cheap solution which is now extremely costly. Wonder how much people at Boeing were in the know of this.
For new systems for sure. However the question to what extend one can change legacy systems without upgrading them to be fully state of the art (i.e. fulfilling latest standats) is sometimes hazy and aviation industry is not the only industry having skeletons in the closest. But I think you know ;-)