Sound Power Level Limits
Verified from official sourcesPart 3Article 42Version 1Effective -Verified 22 August 2026
In plain language
Your drone must comply with legal noise limits. Do not modify the propulsion system in a way that increases noise levels.
Requirement as structured
Unless it is a fixed-wing UA, a class C2 UAS must have a guaranteed A-weighted sound power level not exceeding the levels established in Part 15.
Original regulatory text
unless it is a fixed-wing UA, have a guaranteed A-weighted sound power level L WA determined as per Part 13 not exceeding the levels established in Part 15;
Applies when
- class marking
- C2
- regulatory category
- Open