The night noise rating system at Heathrow measures noise according to something called the 'Quota Count' or 'QC' scale. When coming in to land, both of our new aircraft measure QC 0.5 on this scale.
This compares with QC 2 for the Boeing 747-400 and QC 1 for the Boeing 767. In other words, both the A380 and the Boeing 787 make only a quarter of the noise impact made by the B747-400.
These new aircraft joining the fleet will make a huge difference in terms of our environmental performance as a company. We'll also be a better neighbour because we'll be operating planes with lower NOx emissions and lower noise levels.