> Landings are for all intents and purposes silent
What altitude were the planes?
Over Fulham (in London), it's about 3000ft and they're audible as a background rumble. They're so frequent the noise never really stops.
By Richmond at 1800ft it's not possible to have a British-volume conversation outside (Americans might be OK…). By Hounslow (down to ~200ft as they cross the airport boundary) it's uncomfortable.
Heathrow's own numbers say 700,000 Londoners have >55dBA noise from flights. (This is mostly landings, as prevailing winds mean take-off is usually away from London.)
What altitude were the planes?
Over Fulham (in London), it's about 3000ft and they're audible as a background rumble. They're so frequent the noise never really stops.
By Richmond at 1800ft it's not possible to have a British-volume conversation outside (Americans might be OK…). By Hounslow (down to ~200ft as they cross the airport boundary) it's uncomfortable.
Heathrow's own numbers say 700,000 Londoners have >55dBA noise from flights. (This is mostly landings, as prevailing winds mean take-off is usually away from London.)
[PDF!] http://www.heathrow.com/file_source/HeathrowNoise/Static/a_q...