An anonymous reader writes with news about a near miss between a drone and a plane near Heathrow. "An unidentified drone came close to hitting a plane as it landed at Heathrow, the Civil Aviation Authority (CAA) has confirmed. An Airbus A320 pilot reported seeing a helicopter-style drone as the jet was 700 feet off the ground on its approach to the runway at 1416 GMT on 22 July. The CAA has not identified the airline or how close the drone came to the plane, which can carry 180 people. It gave the incident an 'A' rating, meaning a 'serious risk of collision'. This is the highest incident rating the CAA can give. Investigators were unable to identify the drone, which did not appear on air traffic control radar and disappeared after the encounter."