Part 15 Maximum sound power level per class of UA (including transition periods)

United Kingdom

UA class	MTOM m in gram	Maximum sound power level LWA in dB
		as from entry into force	as from 2 years after entry into force	as from 4 years after entry into force
C1 and C2	m < 900	85	83	81
C2	900 ≤ m< 4 000	85 + 18,5 lg	83 + 18,5 lg	81 + 18,5 lg

Where ‘lg’ is the base 10 logarithm.