The AIRlabs Austria innovation laboratory, which specializes in drone testing and is funded by the Federal Ministry for Climate Protection, Environment, Energy, Mobility, Innovation and Technology (BMK), carried out indoor weather tests with drones for the first time. For a week, AIRlabs Austria carried out the first icing, climate and weather tests with civilian drones in the Vienna climate wind tunnel, including the world's first test of a civilian 25-kilogram drone under standardized icing conditions for manned aviation. "The entire team and partners at AIRlabs Austria are happy and proud that our first major test measurements have enabled test campaigns to be carried out in the year our innovation laboratory was founded, and with such exciting wind, temperature and icing tests that reflect our reality for civilian drone operations in Austria in winter very well," says Holger Friehmelt, Head of the Aviation Institute at FH Joanneum and also Technical and Scientific Director (TWD) of AIRlabs Austria. Specifically, in November 2020, fully operational medium-weight, civil octocopter drones weighing up to 25 kilograms and with a maximum payload of 10 kilograms were tested for a week in the Vienna climate wind tunnel of Rail Tec Arsenal (RTA) - a consortium partner of AIRlabs Austria - under various operating situations, including in real operation with running engines, in a wide range of different temperature, wind and weather conditions including standardized icing according to internationally defined specifications. Tests were carried out in sub-zero temperatures, wind speeds of just under 80 kilometers per hour and typical icing situations, as are already known from manned aviation.