23/09/2026
Operation Blue Skies will experiment with lowering transatlantic flights' climate impact from November.
Routes will be altered to take weather forecasts into account, advising pilots to adjust their flying altitude to attempt to avoid conditions where contrails are more likely to occur. Contrails are thought to represent about a third of aviation's climate impact.
For more information, see this article in New Scientist
Operation Blue Skies is the world’s first trial to deploy contrail avoidance measures across an entire airspace, aiming to lower the climate impact of flights on a large scale