An approach that saves fuel
Continuous descent operations (CDO) are a particularly fuel-saving and low-emission approach procedure when aircraft come in to land. If possible, aircraft descend continuously with minimum engine power after leaving the cruising level until landing, ideally gliding down to the runway. Horizontal flight phases in which the engines have to provide thrust are thus largely avoided.
DFS offers airlines continuous descent approaches from the upper airspace of Austria and Switzerland when flying to the major German airports. This reduces fuel consumption in German airspace by almost 110,000 tonnes per year. However, the CDO procedure is only possible if the traffic and weather situation permits.
Another procedure that is currently being tested at Frankfurt Airport during the day is the satellite-based segmented approach. It shortens the final approach and thus saves fuel. In addition, thanks to satellite navigation, densely populated regions can be flown around more precisely.