Certification Requirements for Class C4 Drones

The European Union has established a comprehensive regulatory framework for Unmanned Aircraft Systems (UAS), commonly known as drones, to ensure safety and efficiency in shared airspace. Within this framework, Class C4 represents a category specifically designed for low-risk operations, often used by model aircraft operators. These drones are simpler in design compared to other classes and are therefore not subject to disproportionate technical requirements.

In this article, we will explore the essential requirements for Class C4 UAS in detail, providing manufacturers and operators with a clear understanding of this classification under Delegated Regulation (EU) 2019/945 and Implementing Regulation (EU) 2019/947.

What is a Class C4 UAS?

Class C4 drones are intended for use within the “open” category, specifically subcategory A3. This means they must be operated far from uninvolved persons and at a safe distance from residential, commercial, industrial, or recreational areas.

Class Identification Label

Each Class C4 UAS must carry a visible class identification label affixed to the aircraft, clearly indicating its classification.

Maximum Take-Off Mass (MTOM)

A key requirement for Class C4 drones is the Maximum Take-Off Mass (MTOM), which must be less than 25 kg, including any payload.

The manufacturer must declare this maximum weight in the drone’s technical documentation, and the total weight of any combination of UAS components must not exceed the declared MTOM.

Safe Controllability and Maneuverability

Class C4 drones must be safely controllable and maneuverable by a remote pilot in accordance with the manufacturer’s instructions.

This must be achievable under all intended operational conditions, even in the event of the failure of one or more systems, if applicable.

Controllability is assessed based on system usability and the remote pilot’s ability to manage the full mission workload effectively.

Automatic Control Modes

Class C4 drones must not feature automatic control modes, except for flight stabilization assistance without directly affecting trajectory and link-loss assistance.

This ensures that the pilot maintains full control of the aircraft at all times.

Manufacturer’s Instructions

Manufacturer-provided documentation is essential for safe and compliant operation. Class C4 drones must include clear documentation covering:

Drone specifications
Loss of command and control (C2) link
Clear operational instructions
Maintenance guidelines
Troubleshooting procedures
Operational limitations
Risk descriptions and safety precautions

EASA Information Notice

All Class C4 drones must include an information notice from the European Union Aviation Safety Agency (EASA).

This notice must be the official document published by EASA, available on their website, and it must be clearly visible on the packaging and easy to read.

Ensure Compliance and Safety with EU Drone Port

Meeting these technical and operational requirements not only ensures compliance with EU regulations but also contributes to a safer and more structured drone ecosystem.

By adhering to the criteria outlined above, your C4 drone can operate legally and safely within the European market.

For more details on class labels and UAS certification, visit the EU Drone Port certification website. If you’re a manufacturer looking to certify your drones, EU Drone Port offers expert certification services as a recognized notified body.

Start the process with EU Drone Port and ensure your drone meets all Class C4 regulatory requirements for safe and compliant operations!