A1/A3, A2 and STS — what is the difference?

Which certificate you need and what to purchase.

A1/A3 — mandatory base for drones over 250 g. Free on A2STS.

A2 — fly closer to uninvolved persons (Open category). Requires Premium.

STS — Specific category scenarios (STS-01, STS-02). Separate Premium or Bundle.

Official exams are run by your NAA — A2STS is preparation only.