Editor’s Note — Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get news about destinations opening and closing, inspiration for future adventures, plus the latest in aviation, food and drink, where to stay and other travel developments. London (CNN) — From Covid to chaos, it’s been another bumpy year for the aviation industry. In much of the northern hemisphere, the busy summer season was beset by delays and cancellations, while in the United States a new study this week found that airplane passenger satisfaction is declining across the board. Still, as we roll into the calmer travel months of September and October, there was cause of celebration in…