In the U.K., in 2015, up to September, 15 Airprox reports have been filed involving 'drones'. One report involved a B757, doing 250kts in class 'A' airspace at 5000' to the west of Macclesfield. The CPA (closest point of approach), was estimated to be 150' (vertically). These filed reports are the encounters that are known about, there are likely to be others. Quite rightly, The Guild Of Air Traffic Controllers, (GATCO), is rather concerned about the proliferation of RPAS.
Last edited by ZOOKER; 19th Dec 2015 at 12:02.