REF : PRS-FTS-MOC KRONOS AD MAVIC 4
KRONOS MVC4
Conversion Kit for C2 drones
Presentation
The result of more than 10 years of research and innovation, the Kronos MVC4 system for the DJI Mavic 4 Pro is designed to provide professional drone operators with a safety solution that is fast to deploy, easy to reuse thanks to the POD system, and fully compliant with the latest EASA standards (C5 / MOC M2 / MOC 2511). The Kronos M4D Parachute Recovery System uses a preloaded spring ejection mechanism to ensure fast, reliable, and repeatable parachute deployment.
Complete Conversion Kit Includes
Parachute Recovery System (PRS – Plug & Play) / Flight Termination System (FTS – Internal) / 1 POD Kronos MVC4 / 1 Klick trigger remote controller / 1 USB-C Cable / 1 USB-C cable guide / Adhesive fixing bracket (x1) / Fastening elastic (x2) / Landing gear extensions (x4)
Compliance
EUROPEAN COMPLIANCE
EASA CONVERSION KIT (C2/C5)
Obtain C5 class label and EASA MOC M2 / MOC 2511 compliance for your DJI Mavic 4 Pro.
C5 workshop conversion (Internal FTS)
MOC M2 Parachute Recovery System
MOC 2511 Flight Termination System
Compliance documents
How can I get C5 class for my C2 class drone?
To obtain a Class C5 label for a Class C2 drone such as the DJI Mavic 3 series, the drone must be converted from C2 to C5, rather than equipped with an external accessory kit.
This conversion is carried out in Dronavia’s workshop or by an authorized reseller, where our experts install an internal Flight Termination System (FTS).
Once equipped with our internal PRS + FTS conversion kit (for example, PRS-FTS-MoC Kronos AD Mavic 3), a DJI Mavic 3E becomes a Kronos AD Mavic 3E, fully compliant with Class C5 requirements.
To achieve C5 conformity, Dronavia conducted a complete assessment of all Class C5 requirements for the integrated drone + PRS + internal FTS configuration. Unlike an accessory kit, where only the kit itself must be assessed, this approach ensures full compliance of the entire system.
KRONOS
DOCS
Get your C5 declaration of conformity
More details
Autonomous Deployment. Instant Protection.
Kronos Parachute Recovery Systems integrate an autonomous deployment technology designed to minimize activation time and maximize safety in the event of a critical in-flight situation. The parachute is automatically deployed in less than 0.27 seconds, compared with approximately 3 seconds for manual activation.
This ultra-fast response helps reduce impact energy, protect the drone and people on the ground, and allows operators to remain fully focused on their flight missions, knowing that a reliable safety system is continuously monitoring the drone.
Insert & Fly
Dronavia’s POD system, integrated into Kronos Parachute Recovery Systems, has been field-proven for over three years. After a parachute deployment, the operator simply removes the used canopy and inserts a new one using the POD system, allowing the system to be rearmed in just a few minutes.
This simple and efficient rearming process minimizes downtime and enables operators to resume their missions quickly and safely.
PARA²: Lighter. Safer. Smarter.
PARA² technology delivers a lighter, more efficient parachute canopy designed to reduce descent speed and impact energy while maintaining excellent stability. Integrated into Kronos Parachute Recovery Systems, PARA² canopies help better protect the drone and people on the ground, while minimizing added weight and operational constraints.
Engineered to Minimize Impact
With the Kronos MVC4 Parachute Recovery System (PRS), a 1.20 kg drone reaches a descent speed of only 3.86 m/s, resulting in an impact energy of just 9 joules. Without a PRS, the same drone would impact the ground with approximately 338 joules.
Flight Logs and Location Buzzer
The Kronos MVC4 system integrates a built-in black box that records flight logs and system data, enabling post-flight analysis and improved understanding of flight events, particularly after a parachute deployment.
In addition, the system features an integrated buzzer that activates after PRS deployment, making it much easier to locate the drone on the ground. This combination enhances both operational feedback and rapid recovery, even in complex environments.
Klick: Instant Safety Control
The Klick remote trigger gives operators immediate and secure control over parachute deployment. Using an encrypted long-range wireless link based on LoRa technology, Klick enables reliable manual activation of the Parachute Recovery System (PRS) at any time during the flight.
Designed for critical situations, Klick offers a fast and controlled response, with continuous link monitoring and operator alerts in case of communication disturbance. Its ergonomic and lightweight design, combined with LED status indicators, ensures intuitive use and full situational awareness.
Preloaded Spring Ejection System
The preloaded spring ejection system ensures instant, reliable parachute deployment without reliance on pyrotechnics or compressed gas. This mechanical solution delivers consistent performance, even in critical situations, and has been extensively tested for maximum reliability in professional drone operations.
Specifications
grams (PRS+FTS)
working temperature (C°)
kilometers of range (maximum) for Klick
of canopy surface (m2)
unlimited autonomy
autonomous deploiement trigger (sec)
minimum height of effectiveness (meters)
Ressources
Installation
FTS testing
Version FR
Flight Manual (C5) – PRS-FTS-MOC Kronos AD Mavic 4 V1.0
Version ENG
Flight Manual (C5) – PRS-FTS-MOC Kronos AD Mavic 4 V1.0
Parachute Recovery Systems (PRS)
with spring-loaded ejection
MVC3 / MVC4 / M4 / M4D
How does the Kronos Parachute Recovery System (PRS) deploy?
Kronos MVC3, MVC4, M4, and M4D Parachute Recovery Systems (PRS) use a powerful pre-stressed spring deployment mechanism to eject the parachute canopy rapidly and reliably.
This deployment system has undergone extensive testing and continuous refinement, resulting in an exceptional level of reliability and consistent performance. The spring-based mechanism ensures fast, repeatable deployment, contributing to effective impact energy reduction during emergency situations.
How to rearm Kronos Dronavia Parachute Recovery Systems (PRS)?
Rearming the Kronos Parachute Recovery System (PRS) takes just a few minutes. Simply replace the old POD with a new one, then carry out a few simple maintenance operations yourself.
These operations are explained in detail in the PRS user manual and in tutorial videos available on our YouTube channel. You can either buy a new POD, or exchange your used POD for a new one at a preferential price.
How do I carry out maintenance on Kronos Parachute Recovery Systems (PRS)?
There are two types of maintenance: preventive and post-deployment. In both cases, the only operation required on Kronos Parachute Recovery Systems (PRS) is replacement of the POD. This is a quick and easy operation, which means that the drone operator never has to immobilize his drone.
A use-by date is indicated on each POD. Dronavia declines all responsibility and voids the warranty on your system if your POD has exceeded this use-by date.
How do I exchange my POD?
Whether your POD has been used after a deployment or has reached its annual maintenance deadline, you can exchange it for a new POD at a preferential price. Simply purchase a POD exchange and send us your POD. Once we receive it, we will ship your replacement POD.
For this POD model, only the parachute canopy must be returned. Please keep the parachute module and send only the used canopy.
Exception: for the Kronos M4D system, the entire POD must be returned, including both the parachute canopy and the carbon fiber tube.
How do I install a Kronos Parachute Recovery System (PRS)?
Kronos MVC3, MVC4, M4 and M4D Parachute Recovery Systems (PRS) are designed for quick and straightforward installation, allowing them to be installed or removed in less than one minute.
Installation consists of attaching the dedicated mounting bracket to the drone, clipping the parachute module onto the bracket, routing the suspension lines around the airframe, and powering on the PRS.
Dronavia provides a comprehensive user manual and step-by-step tutorial videos to guide operators through the installation process, ensuring a simple, safe, and reliable setup without the need for specialized tools.
Can I travel by plane with a Dronavia Kronos Parachute Recovery System (PRS)?
There are no constraints for drone operators traveling by air. Most airlines offer the option of putting the Kronos Parachute Recovery System (PRS) in the hold or in the cabin.
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