A model/rc controlled helicopter that close to an airliner is very serious, at best causing distraction to the flight crew in a critical phase of flight, at wor

A model/rc controlled helicopter that close to an airliner is very serious, at best causing distraction to the flight crew in a critical phase of flight, at worst causing a collision with a several kg object with potentially high velocity differential and enough energy to damage the aircraft, or be ingested into an engine.