Why
The limit keeps small unmanned aircraft separated from most crewed traffic, but helicopters and low-flying aircraft can still appear below it. “Above ground” follows terrain and is not simply altitude shown above sea level.
What to do next
- 01Check your jurisdiction’s official rule and map.
- 02Set a height warning or limit in the flight app.
- 03Give way and land if crewed aircraft approach.
- 04Account for rising ground when flying along slopes.
Important exceptions
- Special authorisations may permit higher operations.
- Rules around tall structures can differ.
- A lower airspace, park or local limit may apply.
Safety note: Aircraft behaviour varies by model, firmware and configuration. For legal or safety-critical decisions, use the current manual and official aviation authority guidance.