It was a first example that I thought of. There are others, less straightforward changes in recent years. They involve safety teams, risk assessment, terrain aw

It was a first example that I thought of. There are others, less straightforward changes in recent years. They involve safety teams, risk assessment, terrain awareness system, voluntary reporting programs, hazard recognition. They made commercial flights safer and we can measure it. https://www.faa.gov/newsroom/out-front-airline-safety-two-decades-continuous-evolution https://www.faa.gov/newsroom/out-front-airline-safety-two-de...