Regulation (EU) 2019/945 defines the technical requirements for unmanned aircraft systems and their components placed on the EU market, including class markings (C0–C6), remote ID, and geo-awareness capabilities.
UAS class markings
The regulation defines six UAS classes (C0 through C6), each with specific technical requirements. Class determines which Open subcategory operations the UA may perform:
| Class | Max take-off mass | Main requirement |
|---|---|---|
| C0 | < 250 g | No class label required; private-build allowed |
| C1 | < 900 g | Remote ID, geo-awareness |
| C2 | < 4 kg | Remote ID, geo-awareness, low-speed mode |
| C3 | < 25 kg | Remote ID, geo-awareness |
| C4 | < 25 kg | No autonomous flight modes |
Remote identification (Remote ID)
C1–C4 class UAS must broadcast identification and location data in real time (Part 2–5 of the Regulation). This allows authorities and other airspace users to identify UA in flight.
Geo-awareness
C1–C3 class UA must be equipped with a geo-awareness system that provides the pilot with information about airspace limitations and alerts when the UA approaches a restricted zone.
Official source
The consolidated text is published on EUR-Lex. Technical annexes (Parts 1–17) contain the detailed class specifications.