Emergency procedures
First things first: keep people safe. The drone can be replaced.
These procedures are drafts and must be approved by HVL's drone safety officer.
Someone is injured
- Land the drone at once
- Call 113 if anyone is hurt.
- Give first aid and secure the site.
- Remove the battery when safe
- Notify the drone safety officer and file an incident report.
A crewed aircraft is approaching
- Descend immediately and keep well clear.
- Land as soon as it is safe.
- Do not fly again until the airspace is clear.
- Note the time
The drone does not respond (flyaway)
- Try return-to-home (RTH) or switch flight mode.
- Keep watching the drone and note its course.
- Warn people in the direction the drone is flying.
- Near an aerodrome: contact the tower (TWR/AFIS) at once.
- Note the last known position in the drone app
Lost link with the controller
- Stay calm — the drone should follow its loss-of-link setting.
- Move towards the drone or to higher ground and align the antennas.
- Check that the RTH height clears obstacles.
- Be ready to take manual control when the link returns.
Critically low battery
- Abort the task and land at once.
- Choose the nearest safe landing site over a distant home point.
- Keep the drone away from people if it must make an emergency landing.
GNSS or compass error
- Be ready to fly manually (ATTI mode) — the drone may drift with the wind.
- Climb to clear obstacles
- Land and calibrate before the next flight.
Uninvolved people enter the area
- Keep the drone away from the people and stop moving towards them.
- Land or hold position until the area is clear.
- Ask a crew member to talk to them.
Battery or drone fire
- Keep your distance — smoke from lithium batteries is toxic.
- Call 110 if the fire may spread.
- Use plenty of water or sand. Do not touch the battery until it is fully cold.
- File an incident report.
After an incident
File an incident report as soon as it is safe. The drone safety officer follows up.
Report an incident