A research team from the Alliance for System Safety of UAS through Research Excellence (ASSURE) has released a report that concludes that a drone collision with large manned aircraft could cause more structural damage than a bird of simidronelar weight.

This finding is in line with the assumptions Navigatus built into its Airspace surveillance risk study undertaken during 2015 for the New Zealand NASP.  Although undertaken before the risk associated with drone conflicts had become a topic of open debate,  found that Drones represented the highest potential risk not mitigated by established and available surveillance technologies.

Study link at: