UAS - Regulation (EU) 2019/945

What the UAS Regulation is and why it matters

The UAS Regulation — formally Regulation (EU) 2019/945 on unmanned aircraft systems and on third-country operators of unmanned aircraft systems — is the EU’s product law for drones. If you make, import or distribute an unmanned aircraft system intended to be flown in the so-called “open” category, this regulation almost certainly sets the bar your product has to meet before it can be placed on the EU market. It defines the technical characteristics a drone must have, the class it falls into, and the conformity assessment and marking it needs to carry.

The UAS Regulation matters because it turns drones from a loosely regulated consumer gadget into a CE-marked product with a clear class identity. The headline feature is the set of class-identification labels C0 to C4, which tell both the buyer and the authorities what a drone is allowed to do and under which operating rules it may be flown. For a brand, getting the class and its markings right is the difference between a drone that can lawfully reach the European consumer market and one that cannot.

📄 Official text: Regulation (EU) 2019/945 on unmanned aircraft systems — on EUR-Lex →

Who the UAS Regulation applies to

The UAS Regulation applies across the supply chain, with duties that scale to your role. It also reaches operators based outside the EU who want to fly in the Union:

Manufacturers — anyone who makes a UAS, or has one made and markets it under their own name or trademark. They carry the heaviest obligations, including the conformity assessment, the technical documentation and applying the class mark and CE marking.
Importers — businesses bringing drones from outside the EU onto the Union market. They must verify the manufacturer has carried out the right conformity assessment and that the product bears the correct markings and documents before placing it on the market.
Distributors — wholesalers and retailers further down the chain who must act with due care, check that the CE marking, class label and instructions are present, and not supply products they know or should presume to be non-compliant.
Third-country operators — operators established outside the EU who carry out UAS operations within the single European sky airspace are also addressed by the regulation.

The product rules focus on UAS intended for operation in the open category and on certain accessories such as remote identification add-on modules. Drones built for the highest-risk operations are handled through other parts of the EU aviation framework rather than the class system.

Key requirements

The UAS Regulation sets product requirements and the class-identification labels C0 to C4 that mark each drone according to its mass, capabilities and the operating limitations attached to it.
Each in-scope drone must undergo a conformity assessment appropriate to its class, after which the manufacturer draws up an EU declaration of conformity.
A compliant drone carries both the class marking and the CE marking, together with the information and instructions a user needs to fly it within the rules.
This product regulation pairs with the operating rules in Implementing Regulation (EU) 2019/947, which set out the Open, Specific and Certified operating categories, overseen by EASA and the national aviation authorities.

Core requirements

Class identification: C0 to C4

The defining feature of the UAS Regulation is the class system. Drones placed on the market for the open category are sorted into classes C0, C1, C2, C3 and C4, with each class defined by characteristics such as maximum take-off mass, design features and the functions the drone must or must not have. The class is not a marketing label: it is the bridge to the operating rules. Which subcategory of the open category a drone may be flown in — and therefore how close it may be flown to people — flows directly from its class. A manufacturer must design the product to meet the requirements of its target class and then carry the corresponding class-identification label.

Conformity assessment and technical documentation

Before a drone can be placed on the market, the manufacturer must put it through the conformity assessment procedure that matches its class, demonstrating that the product meets the applicable requirements. To back that up, the manufacturer prepares technical documentation describing the design, manufacture and operation of the UAS and showing how the relevant requirements are met. Where harmonised standards exist, conformity can be assessed against them; the manufacturer then draws up and signs an EU declaration of conformity and keeps the documentation available for market surveillance authorities for the defined retention period.

Markings: the class label and CE

A compliant drone must bear both the class-identification label for its class and the CE marking, applied visibly, legibly and indelibly to the product (or, where that is not possible, to the packaging and accompanying documents). The CE marking signals conformity with the applicable EU requirements, while the class label tells the user and the authorities which operating rules apply. Manufacturers must also indicate their name, registered trade name or trademark and a contact address, and importers must add their own identifying details.

Remote identification, geo-awareness and information to the user

Depending on their class, drones must incorporate features such as direct remote identification and geo-awareness, so that an aircraft can be identified in flight and made aware of airspace limitations. The product must be supplied with clear instructions and safety information, including the operating limitations tied to its class and information the operator needs to register and fly lawfully. This is where the product regulation meets the operating regime: the drone’s built-in capabilities and its documentation are what make compliant operation possible.

The link to the operating rules (Regulation 2019/947)

Regulation (EU) 2019/945 governs the product; Implementing Regulation (EU) 2019/947 governs the flying. The two work as a pair. The class a drone carries under 2019/945 determines which Open, Specific or Certified operating category and subcategory it can be used in under 2019/947, with EASA and the national aviation authorities overseeing operations, operator registration and the operating limitations. A brand that understands only the product side will still leave its customers unable to fly the drone lawfully, so the two regulations are best read together.

Obligations by role

Manufacturers — design the drone to its target class, run the conformity assessment, hold technical documentation, draw up the EU declaration of conformity, and apply the class label and CE marking.
Importers — verify the manufacturer’s conformity assessment and markings, add their own identification, refuse non-compliant products and cooperate with authorities.
Distributors — check that the CE marking, class label and instructions are present, store and transport products with due care, and stop supply of products they believe to be non-compliant.
Third-country operators — ensure operations carried out within the Union meet the applicable requirements overseen by the aviation authorities.

Enforcement

Each Member State designates market surveillance authorities to enforce the product requirements, while the operating side is overseen by EASA and the national aviation authorities. In Denmark, the Danish Civil Aviation and Railway Authority (Trafikstyrelsen) is the competent authority for drone operations and operator registration.

A drone that is placed on the market without the correct class label, CE marking or conformity assessment is a non-compliant product, and authorities can require corrective action, restrict or prohibit its sale, and order it withdrawn or recalled. Because the class marking is what unlocks the operating rules, a marking failure does not just create a product-law problem — it leaves buyers unable to fly the drone where they expected, which quickly becomes a commercial and reputational problem too.

Getting compliant

Confirm which class (C0 to C4) your drone is designed and intended for, and design it to meet that class’s requirements.
Carry out the conformity assessment procedure appropriate to the class.
Compile and retain the technical documentation and draw up the EU declaration of conformity.
Apply the correct class-identification label and the CE marking, plus manufacturer and importer identification.
Build in the required features for the class, such as direct remote identification and geo-awareness.
Supply clear instructions and safety information, including the operating limitations tied to the class.
Read the product rules together with Implementing Regulation (EU) 2019/947 so your customers can register and operate lawfully.

How Conphora helps

Conphora monitors the UAS Regulation and maps your drones against its requirements, flagging gaps in class identification, conformity assessment, markings and documentation before they become enforcement problems. The platform helps you generate and keep the right documentation, and alerts you when obligations change so your compliance stays current.

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Sources and further reading

This guide is for general information and is not legal advice.

Last updated: 12 June 2026