And which code would that be?

How about the novel concept of letting the people involved make the decision based on their location, skills,type of aircraft, supervision,potential liability, and the knowledge that they will be held responsible for any negative outcome? They will also get credit for any success.
There are more than enough organizations and demagogs trying to save people from themselves all using the basis that they know better than the people on site what is best for them.
What works for some in one location can be a disaster for others. But, that is no reason to bring everyone to the lowest common denominator because some can't have an equal outcome.