Allegedly a drone came "within yards" of a London air ambulance helicopter:
The reporter seems to be struggling with units of measurement thought, as he says: "The legal limit for drones to fly is 400m"
I'm always a bit skeptical about the distances reported of how close supposed drones approach aircraft in these types of incident, as it is notoriously difficult for humans to accurately judge distance, even at very close range, without reliable scale and perspective references. Very often what is reported as a "drone" passing close to a manned aircraft could just as easily be another manned aircraft much further away, and often there is indeed an ADS-B trace from a nearby commercial flight that corresponds well with the time/direction/altitude.
However, in this particular instance it seems likely that there was a drone of some description relatively close to the helicopter - ie within a few hundred meters. Not so cool?
The reporter seems to be struggling with units of measurement thought, as he says: "The legal limit for drones to fly is 400m"
I'm always a bit skeptical about the distances reported of how close supposed drones approach aircraft in these types of incident, as it is notoriously difficult for humans to accurately judge distance, even at very close range, without reliable scale and perspective references. Very often what is reported as a "drone" passing close to a manned aircraft could just as easily be another manned aircraft much further away, and often there is indeed an ADS-B trace from a nearby commercial flight that corresponds well with the time/direction/altitude.
However, in this particular instance it seems likely that there was a drone of some description relatively close to the helicopter - ie within a few hundred meters. Not so cool?