The safest moment to think about Return-to-Home is not when the controller loses its signal. It is while the drone is still on the ground and the pilot can walk ten paces in any direction.

A recorded Home Point is a coordinate. It is not a promise that the patch beneath it will remain clear, flat or safe to land on.

The aircraft returns to its last recorded point

DJI’s official explanation of RTH logic says the aircraft returns to the last recorded Home Point when the relevant conditions are met. Those conditions and the route vary by model and situation. On supported aircraft, the action after a lost control link may be Return to Home, land or hover. Some RTH modes use vision systems to plan a route; others follow a more direct or historical path.

Even within one manufacturer’s range, the distance from the Home Point can change the behaviour. DJI’s guidance describes cases in which an aircraft close to the Home Point lands immediately, while an aircraft farther away returns at its current altitude or first climbs to a preset RTH altitude. That is why the manual for the exact aircraft and current firmware matters more than a generic memory of how “DJI drones” behave.

A good coordinate can still be a bad landing site

Consider a launch from a quiet corner of a park. Ten minutes later, a family has spread a picnic blanket beside the take-off spot. Or the pilot launched from a narrow path and then stepped away to improve the view. The saved coordinate may be accurate while the landing area has become unsuitable.

There is another trap: a controller or phone may show a Home Point update, but the pilot may not notice where it was recorded. DJI’s flight safety guidance tells users to observe surrounding obstacles, set an RTH altitude above them and, if the Home Point has been refreshed, go to the new point to wait for the drone. The refresh is not a small detail; it changes where the aircraft is trying to go.

Return-to-Home is a contingency, not permission to stop planning

The UK CAA’s guidance on remote-pilot responsibilities says a flight must be conducted so that a lost command-and-control link does not subsequently endanger people or property, including while the aircraft performs its RTH procedure. In other words, the automatic feature remains part of the pilot’s risk assessment.

A short pre-flight check can make the automation far more useful:

• Wait for a clear confirmation that the Home Point has been recorded, and verify its position on the map.
• Check the signal-loss action rather than assuming it is set to RTH.
• Set an appropriate RTH altitude for the obstacles and rules at this site, using the aircraft’s own manual.
• Choose a launch area with enough clear space for an unexpected automatic landing.
• Keep watching that area during the flight. If people, vehicles or animals move into it, be ready to take appropriate control or use a safer recovery plan.

Return-to-Home is excellent automation when the point, route and landing area have all been considered. The button is not the plan. The plan is deciding where the drone can safely come back before it ever has to.