Re: At what point...
Careful you talk sense.
It is almost like the cars NCAP testing regime but for planes. Letting an independent body test things for safety. Not saying we throw planes into concrete barriers, but coding is much easier. Every plane type sits in a hangar somewhere and has code monkeys try and break it.
Winners get an air worthiness badge. Losers go home - without their plane (as it can't fly safely)