Part 15 Maximum sound power level per class of UA (including transition periods)F1

United Kingdom

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Annex Pt. 2 point (12A) inserted by Unmanned Aircraft 2025 reg. 9(2)
Annex Pt. 3 point (14A) inserted by Unmanned Aircraft 2025 reg. 10(2)
Annex Pt. 4 point (9A) inserted by Unmanned Aircraft 2025 reg. 11(2)
Annex Pt. 5 point (4)(a) word omitted by Unmanned Aircraft 2025 reg. 12(2)(a)
Annex Pt. 5 point (4)(a) words inserted by Unmanned Aircraft 2025 reg. 12(2)(b)
Annex Pt. 1 point (7A)-(7D) inserted by Unmanned Aircraft 2025 reg. 8(2)
Annex Pt. 1 point (8)(a) word omitted by Unmanned Aircraft 2025 reg. 8(3)(a)
Annex Pt. 1 point (8)(a) words inserted by Unmanned Aircraft 2025 reg. 8(3)(b)
Annex Pt. 5 point (3A)(3B) inserted by Unmanned Aircraft 2025 reg. 12(1)

UA class	MTOM m in gram	Maximum sound power level L _WA in dB
UA class	MTOM m in gram	as from entry into force	as from 2 years after entry into force	as from 4 years after entry into force
F2UK1 and F3UK2	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.

Annotations

F1: Substituted by Commission Delegated Regulation (EU) 2020/1058 of 27 April 2020 amending Delegated Regulation (EU) 2019/945 as regards the introduction of two new unmanned aircraft systems classes.
F2: Word in Annex Pt 15 table substituted (1.1.2026) by The Unmanned Aircraft (Amendment) Regulations 2025 (S.I. 2025/1106), reg. 1(2), Sch. 1 para. 2(b)
F3: Word in Annex Pt 15 table substituted (1.1.2026) by The Unmanned Aircraft (Amendment) Regulations 2025 (S.I. 2025/1106), reg. 1(2), Sch. 1 para. 3(b)