ANEF modelling gives a forecast of aircraft noise exposure for a future year.
The results of ANEF modelling are drawn onto maps as noise exposure contours.ANEF maps show these contours displayed in 20, 25, 30, 35 and 40 ANEF units, with higher contour numbers representing larger cumulative amounts of aircraft noise over an average one-year period. The ANEF units are not decibel measurements - they are contours based on community reaction to aircraft noise.
Town Councils use the ANEF Maps that Defence publishes to apply the Australian Standard 2021 2000 Acoustics - Aircraft Noise Intrusion - Building Sitting and Construction to determine if the site is suitable for residential, commercial or industrial development.
ANEF maps are used by local planning authorities (usually Town Councils) near military airfields and civilian airports to identify whether land is suitable for development. The higher the ANEF value the more likely it is that the Australian Standard will recommend that Councils avoid residential (housing) developments.
Defence opposes inappropriate development around our bases because it exposes new homeowners to aircraft noise, and may limit opportunities to mitigate against noise impacts in the future.
Review of Australian Standard AS2021:2015
In May 2013 Standards Australia announced a decision to review aspects of AS2021:2015. The scope consists of updating aircraft fleet details, reviewing the applicability of the standard to small airports and explaining the procedures to develop an ANEF.
Further information about the review is available from the Department of Infrastructure and Transport.