The A1/A3 drone license is mandatory for anyone flying a drone weighing more than 249 g. This certification is obtained through an online course, which is provided free of charge by Austro Control.
Pilots operating a C5 or C6 drone must pass the STS exam before submitting the STS declaration.
The drone license must be carried on every flight, either electronically (e.g., on a smartphone) or in printed form.