Reading the BBC news as I do for news of the Old Country I happened to see this article http://www.bbc.com/news/uk-39747042 “Plane in UK’s first double-drone near-miss case” In which an A320 approaching London Heathrow last November reported having been in close proximity with not one but two drones. This is the first reported occasion that two drones have compromised the safety of an aircraft in UK airspace. The fact that the Airbus was at approximately 5,000 (five thousand) feet on its approach makes the actions of the drone operators even less explicable, since under UK law done operators are expected to restrict their flights to an altitude of 400 feet.
The article mentions the UK Airprox Board so I thought I would have a look at their website. https://www.airproxboard.org.uk/home/ As the website says” “Airprox occurrences are near accidents, and the mission of the UKAB is: “To enhance Air Safety through prevention of airborne conflict and mid-air collision”. As part of this mission, a key role is to champion, contribute and communicate an understanding of Airprox causes and mid-air collision risks amongst the wider aviation community.”
Reading the report summaries for March 2017 https://www.airproxboard.org.uk/Reports-and-analysis/Monthly-summaries/2017/Monthly-Meeting-March-2017/ I am amazed at the number of reported incidents overall, and I am very concerned that the last five or so incidents involve both commercial and military aircraft coming into conflict with drones or models. Some of the other reports are disturbingly interesting, such as the unidentified model aircraft that narrowly missed an RAF Chinook when it flew above the low-flying helicopter (both pilots missed it, only a crewman observed the 1-meter white model passing above them). Also noteworthy is the interaction between an RAF Hawk and two “Foreign Military” (less than three guesses required) F-15s over the Vale of York in November 2016.
When I feel inclined, I may look to see what similar mechanism exists in the USA.