GM1 UAS.OPEN.020(5)(c) - section overview

Verified from official sources
GM1 UAS.OPEN.020(5)(c)GM1 UAS.OPEN.020(5)(c)Version 1Effective -Verified 24 August 2026

In plain language

This guidance material clarifies what constitutes a modification that breaches CE class marking compliance, confirming that identical part replacements are permitted and that the user manual should guide maintenance.

Requirement as structured

This guidance material clarifies what constitutes a modification that breaches CE class marking compliance, confirming that identical part replacements are permitted and that the user manual should guide maintenance.

Original regulatory text

MODIFICATION OF A UAS WITH A CE CLASS MARK Modifications to UAS that breach compliance with the requirements for the CE marking are those that affect the weight or performance so that they are outside the specifications or the instructions provided by the manufacturer in the user manual. A replacement of a part with another that has the same physical and functional characteristics is not considered to be a breach of the requirements for the CE marking (e.g. a replacement of a propeller with another of the same design). The UA user manual should define instructions for performing maintenance and applying changes that do not breach compliance with the CE marking requirements. <

Applies when

country
European Union / EASA
regulatory category
Open