The UK Airprox Board investigated a drone near-miss reported by Embraer ERJ-170 near London City Airport on 6 December 2015. Separation distance reported as 164 feet.
On 6 December 2015, the pilot of an ERJ-170 reported that he was on final approach to London City, passing 1000ft when he saw a red and black UAV. He reported that there was a high cockpit workload as they were landing, and it was too late to take any avoiding action. The drone passed overhead by 100ft and 50m to the port side. It could have been stationary, but the wind at this level was in excess of 20kts. He believed that the aircraft about 2mins ahead of him had also reported seeing the drone.
Reported separation: 100 ft vertical (30 m) / 164 ft (50 m) horizontal.
Aircraft: Embraer ERJ-170
Aircraft altitude: 1000 ft
Separation: 164 feet
Please note that separation distances are solely based on pilot’s judgements and not necessarily accurate since horizontal and vertical separation distances can be hard to judge.