The figures below show the ground tracks at Heathrow for flights over one day - green tracks are departures, red tracks are arrivals. The overall radar coverage area for Heathrow extends 60 nautical miles north-south and 60 nautical miles east-west, and up to 17,000 feet above the airport.

Westerly departure tracks at Heathrow Airport

Reproduced from the Ordnance Survey map with permission of the Controller HMSO © Crown copyright

Westerly arrival tracks at Heathrow Airport

Reproduced from the Ordnance Survey map with permission of the Controller HMSO © Crown copyright