C4 class drones in the EU framework
Aircraft class and operational category must align — buying the wrong class blocks legal flights.
1. What C4 means
C4 is a manufacturer assurance class with defined mass and capability limits under open category rules.
2. A1 operations with C4
Typically supports flying over uninvolved persons with light aircraft under strict conditions — read your manual.
3. When A2 is still required
Heavier missions near people with C2 aircraft need A2 competency — class alone does not replace certificates.
4. Exam relevance
Questions contrast classes C0–C4 and link to subcategories — study comparison tables.
5. Buying advice
Match aircraft class to the missions you sell commercially — not only to hobby plans.