EU legislators must reorganize the production and supply chains of sustainable aviation fuel (SAF) to accelerate the ramp-up of the eco-fuel. This is the demand of PtX-Lab Lausitz, a practical laboratory for fuels made from green hydrogen. The Refuel EU Aviation regulation already mandates the supply of SAF at EU airports, and demand has already increased. However, PtX-Lab Lausitz argues that airlines and fuel manufacturers still lack the flexibility to claim emissions savings through the production and use of SAF.