Noise


The Government has clearly stated that a third runway will not go ahead unless there is no more noise overall than in 2002.

Aircraft are getting quieter

It may be difficult to see how noise levels at Heathrow wouldn't increase with a third runway but the answer is technology. Aircraft are getting quieter - the latest generation of aircraft such as the A380 is rated as generating only 25% of the noise levels of a Boeing 747-400.

Over the last thirty years, the number of people within the 57dB noise contour around Heathrow has fallen by more than 80 per cent, despite the number of flights increasing by more than 70 per cent during this period.

Aircraft manufacturers remain committed to reducing noise levels by using innovative technology. By the time a third runway would be operational, the planes currently in use at Heathrow would have nearly been entirely replaced by newer, quieter aircraft.

No more noise than in 2002

If growth were given the go-ahead, there would be winners and losers in terms of aircraft noise. Some people would hear aircraft noise for the first time but other communities would also find that the level of noise they experience reduced. The Government has made it clear that the overall noise footprint from Heathrow cannot increase above 2002 levels, even with a third runway or mixed mode.

It is also important to note that mixed mode would be an interim measure until a third runway was built. Once a third runway was operational, then for safety reasons the existing two runways would have to revert to segregated, alternated mode (as they do currently). This means that communities living under the existing flights paths would once again receive the half day of respite as now.

No increase night flights

The Government has also made it clear that growth at the airport would not result in more night flights. The airport operator, BAA, has also underlined its commitment to keep night flights to a minimum.

Noise insulation schemes

BAA already operates noise insulation schemes for those people most affected by aircraft noise. If growth were to go ahead at the airport, these schemes would be reviewed to ensure people newly affected by high levels of aircraft noise were included.

Find out more about Heathrow and aircraft noise.