Subcategory A3 Encompasses Subcategory A1 Safety Envelope

Verified from official sources
GM1 UAS.OPEN.040(4)GM1 UAS.OPEN.040(4)Version 1Effective -Verified 24 August 2026

In plain language

Because subcategory A3 flights must be kept at least 150 meters away from residential, commercial, and industrial areas, they are considered safe enough to encompass the less restrictive subcategory A1 operational envelope.

Requirement as structured

EASA explains that subcategory A3 operations encompass subcategory A1 operations because they are conducted at a 150-meter distance from residential, commercial, and industrial areas where no uninvolved persons are endangered.

Original regulatory text

Since subcategory A3 UAS operations are conducted at a 150-m distance from residential, commercial, and industrial areas, where no uninvolved persons are endangered, subcategory A3 encompass subcategory A1 (operations that are not conducted over assemblies of people and over uninvolved people).

Applies when

country
European Union / EASA
operation
EU UAS operation
subcategory
A3
regulatory category
Open