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On-field measurements following the EASA guidelines on noise measurements of unmanned aircraft systems lighter that 600 kg

Miguel-Ayala, Pablo; Estévez-Mauriz, Laura; Romero-Romero, Carlos; Torija, Antonio J

On-field measurements following the EASA guidelines on noise measurements of unmanned aircraft systems lighter that 600 kg Thumbnail


Authors

Pablo Miguel-Ayala

Laura Estévez-Mauriz



Abstract

Unmanned Aircraft Systems (UAS) have gained increasing attention, leading to the development of noise measurement protocols, such as the 2023 guidelines from the European Union Aviation Safety Agency (EASA). These guidelines focus on noise measurement procedures for UAS (lighter that 600 kg), outlining measurements and operational requirements. A key requirement is that the difference between the UAS sound pressure level and the background sound level must be at least 15 dBA. This study presents acoustic analysis results from three UAS (weighing under 600 kg) at three different heights, following EASA's guidelines. The study site was chosen with a background noise level of around 48 dBA. Results showed that only the largest UAS (7,3 kg) met the 15 dBA difference at all heights, while the smallest UAS (0,25 kg) did not meet this threshold at any height. Given that low background noise (below 45 dBA) is crucial to fulfilling the guidelines, the study concludes that it is challenging to apply these standards to small UAS. The study discusses whether the EASA guidelines require amendment for small size UAS.

Presentation Conference Type Conference Paper (published)
Conference Name Forumacusticum Euronoise 2025
Start Date Jun 23, 2025
End Date Jun 26, 2025
Acceptance Date Jun 23, 2025
Publication Date 2025-06
Deposit Date Jul 7, 2025
Publicly Available Date Jul 10, 2025
Peer Reviewed Peer Reviewed
Keywords UAS; noise; guidelines

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