C1 Sound Power Level Indication

Verified from official sources
Part 2Article 42Version 1Effective -Verified 22 August 2026

In plain language

Unless it is a fixed-wing drone, your C1 drone or its packaging must display a label showing its guaranteed sound level.

Requirement as structured

Unless it is a fixed-wing UA, a class C1 UAS must have the guaranteed A-weighted sound power level indication affixed on the UA and/or its packaging.

Original regulatory text

unless it is a fixed-wing UA, have the indication of the guaranteed A-weighted sound power level affixed on the UA and/or its packaging as per Part 14;

Applies when

class marking
C1
regulatory category
Open