The investigation results demonstrate that the safety of the Southend Airport in London was compromised and the collision between the aircraft and unmanned drone was probable.

The drone came within 50m (164ft) of the airliner on 26 December while flying higher than “cloud tops”. A second sighting of a suspected drone in the Southend area was made on 30 December, investigators said. In both incidents the drones were above the 400ft (122m) maximum limit for unmanned aerial vehicles.