An aeroplane carrying 165 passengers as it came into Heathrow nearly crashed into a drone which “should not have been flying” so high, a report has found.
The plane, which is understood to have been flying over north-east London at the time, came within 66ft (20m) of the drone – causing what the report called a “very near-miss”.
The pilot saw the drone out of the cockpit window whilst flying at 4,900ft (1,494m) on the 18th July.
It was around 50cm (20in) wide.
The report, by the UK Airprox Board, said: “This incident appeared to be a very near-miss and that the drone operator should not have been flying in that location at that altitude. Consequently, it was determined that the drone was flown into conflict with the A320.
The saga “portrayed a situation where a collision had only been narrowly avoided and chance had played a major part,” the report added.
“The drone operator could not be traced,” the report added.