This is not unique to the aviation industry. There are only 25 women CEOs of S&P 500 companies, making it about 5 percent of the pool. Indra K. Nooyi will leave her position as CEO of PepsiCo effective October 3, 2018, thus bringing that number down, and she will, unfortunately, not be replaced by a female. This seems to be a recurring trend that when women CEOs step down, they are replaced by male CEOs. Irene Rosenfeld at Mondelez International was replaced by a man, as was Meg Whitman at HP Enterprise.