Our air taxi study is going to look at a number of factors that have affected accidents and incidents in that area, and fatigue will certainly be one of the aspects we're looking at. Takeoffs and landings are certainly a very critical phase of flight, and most accidents occur in one or the other phase. If somebody is doing a lot of takeoffs and landings in a day, that's certainly something that can play into their fatigue.
On April 4th, 2017. See this statement in context.