The aim of this paper is to present a comparative analysis between the standards that evaluate aircraft noise. The comparison evaluates the methodologies and acoustics metrics used in Brazilian context. International experiences have also been considered. The analysis indicates the existence of differences between the standards, particularly with respect to the metrics used to monitor and characterize the level of noise annoyance causing by aircraft operations. Brazil has consolidated the use of metric that indicates the sound pressure level day - night (Ldn) . Other countries use more than one metric to assess the soundscape in the vicinity at the airports. The studies with other metrics for the Brazilian context can assist in planning the use and occupation of land around airports. Finally, this research contributes to a better understanding of the metrics currently used for the assessment of aircraft noise. Furthermore, can also contribute to the improvement the sounding zoning around of areas close at the aerodromes.
aircraft noise; weighted noise index; annoying sound level; technical standards; communities