I remember reading an article some time ago about some people who inspected power lines from a helicopter. They introduced check lists and the number of acciden

I remember reading an article some time ago about some people who inspected power lines from a helicopter. They introduced check lists and the number of accidents increased. It related to them no longer going through the plan as a team and absently mindedly checking off the list without thinking about it properly. My search skills are failing me and I can't find it anywhere.