Planes across the UK still fly on many of the same routes that were put in place in the 1950s. But all that’s about to change. Today, planes can fly using satellite navigation, yet they still follow outdated routes, often relying on air traffic controllers to give them directions. With modern technology, planes could climb more quickly and take more direct routes. There would be less noise from planes and fewer carbon emissions per flight, as well as fewer delays caused by congestion in the sky.