The following map shows the 2024 noise contour, produced by the UK Civil Aviation Authority (CAA). Using the slider on the map, the various contours can be viewed. The area of the 2024 summer day actual modal split 51 dBA Leq 16hr contour increased by 1.2% to 114.2km2 compared to 2023. In addition, the 2024 summer day actual modal split 54dBA Leq 16hr contour increased by 2.6% to 60.0 km2 compared with 58.5km2 in 2023. It should be noted that, in 2024, London Gatwick operated around 95% of the traffic compared to 2019, due to the effects of the COVID-19 pandemic on air traffic levels. Flight numbers have continued to increase year-on-year through the post-pandemic recovery which is why the contours have increased slightly compared to the previous year.
The full report from the UK CAA ERCD can be read in full here.
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