I think you’re on the right track, I assume it’s safety. If one bad flight plan came in, what are the chances other unnoticed errors may be getting through? G

I think you’re on the right track, I assume it’s safety. If one bad flight plan came in, what are the chances other unnoticed errors may be getting through? Given the huge danger involved with being wrong shutting down with a “stuff doesn’t add up, no confidence in safe operation” error may be the best approach.