What can Air Navigation Services Providers do to make aviation more sustainable? How does sustainability integrate with the historical mission of maintaining a safe and efficient flow of traffic? In this episode, we explore various initiatives and ways of working through which ANSPs can contribute to this important and required change: Network management to avoid having aircraft waiting while in the airA-CDM to reduce waiting time on the ground with engines runningFlexible Use of Airspace, to better share airspace between civil and military usersFree Route Airspace, both nationally and internationally, to let aircraft fly the most direct routesArrival Management, to reduce the time in holding patternsContinuous Descent Operations, to reduce fuel consumption and emissions during the approachRNP AR approaches, which save time by shortening the approach trajectories at airports with complex surroundingsUse of drones to check radionavigation installations