Unreliable airprox data around the world.
What are the chances of an airprox with an SUAS?
George Mason University study found the likelihood of a damage-causing collision with an SUAS to be once every 1.87 million flight years (and risk of injury to be once every 187 million years of operation).
Drone threat to Commercial Air Transport – “This review concludes that the threat that small drones pose to airliners is economic damage to the operators, not a threat to flight crew or public safety.”
If there was a mid-air collision would a drone cause catastrophic damage to an airliner?
Size Matters – Why so many airprox reports involving drones turn out to be inaccurate
Geofencing/ altitude limits prevent drones flying where they shouldn’t. What percentage of drones have this?
DJI drones feature geo-fencing and hard altitude limits. This report by Skylogic Research shows that DJI drones account for 74% of drones in use: http://thedronegirl.com/2018/09/18/dji-market-share/
Yuneec accounts for a further 5% – and their products also include geo-fencing technology and a 122m (400ft) hard limit.
Other brands make up the rest of the market in 1%, 2% and 3% chunks and are mostly toys incapable of reaching problematic altitudes.
Drone performance: can a drone even get to the altitudes where airproxes are frequently reported?
Can a commercial airliner fly safely with one pilot?
According to this study by the Air Transport Safety Board of Australia, in-flight incapacitation of airline pilots is a frequent event. There are on average 17 pilot incapacitations per year on Australian-registered airliners. This equates to one every 34,000 flights or one every 21 days. The main causes are gastrointestinal illness, followed by laser strikes.