# Commission Delegated Regulation (EU) 2019/945 of 12 March 2019 on unmanned aircraft systems and on third-country operators of unmanned aircraft systems, Part 15: Maximum sound power level per class of UA (including transition periods)

Extent: E+W+S+N.I.

UA class
MTOM m in gram
Maximum sound power level L WA in dB
as from entry into force
as from 2 years after entry into force
as from 4 years after entry into force
UK1 and UK2
m < 900
85
83
81
UK2
900 ≤ m < 4 000
85 + 18,5 lg
83 + 18,5 lg
81 + 18,5 lg
Where ‘ lg ’ is the base 10 logarithm.

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Source: https://www.legislation.gov.uk/eur/2019/945/annex/part/15 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-945/annex/part-15
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.