Frequency-based aircraft noise charts (N60s)
From the community’s perspective, it is also important to know the number of noise events that are forecast to occur during sleeping hours. AS2021-2015 identifies 50 dB(A) as the inside noise level above which aircraft noise can be considered to be intrusive during sleeping hours. This inside noise level would generally be experienced during a 60 dB(A) outside noise event. A contour map showing the number of events louder than 60 dB(A) – known as the N60 contour – is therefore an effective way of conveying this information to the community. Given its purpose, noise events shown are limited to those occurring between 11.00pm and 6.00am.
More information about the Sydney Airport Curfew Act 1995 can be found here.
The N60 charts developed for Master Plan 2039 assumes that Western Sydney Airport opens in late 2026 and that as a consequence, there are changes to the curfew arrangements at Sydney Airport. The forecast N60 chart for Sydney Airport in 2026 (operations between 11.00pm and 6.00am only) is shown in the tool below. Hover over the different contour levels to see the forecast number of events greater than 60dB during curfew hours around Sydney Airport.
Your location will display on the map based on your location input. Enter your address to see information relevant to where you live or your suburb to see information general to your suburb. If you choose not to enter your location, you will see information for Sydney CBD.
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