Aircraft noise accreditation, standardised on ISO 20906

AENA achieves ENAC accreditation in ISO 20906, representing a guarantee for airports in relation to data quality.


Aena is the world's leading airport operator by numbers of passengers. It s a state-owned company that manages general interest airports and heliports in Spain.






EVS Aviation


Aircraft noise is still a main concern for airport managers

Aircraft noise continues to be one of the main concerns and problems for airport managers. While the technology for aircraft continue to evolve and become quieter, the growing amount of air traffic globally means that more and more people are exposed to air traffic noise. According to a recent World Health Organisation report, aircraft noise is in the top 3 sources of noise exposure in the EU, following road and rail traffic.

Although most people are used to road and rail noise, exposure to aircraft noise at the same level can often be considered more annoying due to the tonality and the distribution of the noise. This creates a significant challenge for airport managers in identifying noise sources, reducing potential annoyances that can be attributed to their airport and managing relationships with surrounding communities.

AENA and communities

Community engagement and noise management at 46 airports across Spain

For an organisation like AENA who manage 46 airports in Spain including Madrid and Barcelona, working with their communities and providing transparent policies and communications has been key to their success. With 7 runways and more than 700,000 operations per year between those airports alone, AENA needed a reliable and trusted third-party solution to help monitor and manage their noise but most of all, provide data that they could trust.

Envirosuite (formerly EMS Brüel & Kjær) has long been a partner of AENA. With ENAC accreditation (National Accreditation Entity recognised in more than 90 countries), it is the testing laboratory for uninterrupted monitoring of environmental noise levels within the airport environment according to ISO 20906 – a standard for unattended monitoring of aircraft sound in the vicinity of airports.

ENAC Accreditation in ISO 20906

What does this mean?

ENAC accreditation in ISO 20906 represents a guarantee for airports in relation to the data quality provided by Envirosuite. As many know, ISO certification isn’t easy and ISO 20906 isn’t straightforward. The ISO established principles of detection, identification and classification of aeronautical events between detected aircraft and other aspects that could potentially create noise. It also defined that minimum reporting must include noise indicators, weather conditions and aeronautical information.

The bottom line is that working with a company that is standardised on ISO 20906 provides airports and its surrounding communities with confidence in the data provided by the systems.