Waiting until science and industry can present solutions which allow CO2-neutral flying is not an option.

Meanwhile we open and create new paths to decrease greenhouse emissions caused by civil air-traffic.

Reducing a few percent of fuel burn on a single flight might at first sight not sound impressive. But sum it up!

A cargo flight from Frankfurt to New York JFK with a modern twin engine long haul freighter carrying a payload of 90 tons and a flight time close to 8 hours shows a trip fuel of about 60 tons.

Hence, 1% lower fuel flow saves about 600 kgs trip fuel.

In addition the amounts for contingency, alternate and final reserve fuel will be reduced as well, adding up to savings of about 100 kgs additional.

The overall reduced gross weight during the entire mission lowers the fuel consumption by another approximately 250 kgs per ton, so all effects together reduce the amount of used fuel for the mission by about 1 ton.