“Every drop counts” is the motto. In future, new software will help to save fuel by optimising the flight profile and speed of aircraft during flight operations. Energy-efficient flight operations are a key success factor for the Lufthansa Group, and at the same time an important pillar of the Group’s environmental management activities. During a flight, the program processes the latest aircraft and weather data in order to calculate in real time the most economical flight curve for the remainder of the flight. A first prototype is due to undergo trials and will initially be tested on Lufthansa’s long-haul fleet.