What is MOSArt in Aviation? (Modular Open System Architecture)

Modular Open System Architecture (MOSArt) is a revolutionary technology that’s transforming the aviation industry by making avionics more modular, interoperable, and upgradable. With MOSArt, aviation systems’ development and integration processes are simplified, and airworthiness certification times are significantly reduced. This article explores how MOSArt is changing the landscape of the aviation industry, its potential benefits and challenges and how it’s contributing to a more efficient, safer, and cost-effective aviation system.

What is MOSArt?

MOSArt is a strategy for developing modular and open systems in the aviation industry. It is based on the modular architecture for avionics systems that allow them to be developed and integrated in a highly interoperable and upgradable manner. With MOSArt, the avionic system is partitioned into several modules, which can be developed, tested, verified, and integrated separately. Different avionics’ modules can be sourced from different suppliers as long as they meet specific requirements. MOSArt increases system integration flexibility and offers faster development and certification of updated avionics systems.

For MOSArt to be successful, avionics system developers, suppliers, and regulatory authorities must agree on a common set of requirements and standards for how avionics modules should be designed, tested, and verified. MOSArt specifies the requirements that ensure the interoperability, modularity, and upgradability of avionics systems. It also ensures that compatibility between different system modules and components, validation data, and interfaces.

Benefits of MOSArt implementation

Adopting MOSArt avionic systems has many potential benefits, including increased reliability, cost-effectiveness, flexibility, and safety. MOSArt offers a modular and open architecture that makes it easier to upgrade avionics systems, accommodate new technologies, and adapt quickly to changing regulatory and operational requirements. MOSArt enables avionic suppliers to provide modular and more specialized components, meaning they can focus on developing specific avionic systems. MOSArt also lowers the costs of adding new functionalities or upgrading existing ones.

Another significant benefit of MOSArt is that it lowers safety risks by making it more straightforward to incorporate safety requirements from regulatory authorities or aircraft engineers. The commonality of MOSArt among different avionics modules enables easier interoperability and integration of airframe, engine, and avionics system technologies, leading to greater overall safety improvements. MOSArt reduces the cost of system development and testing by providing common interfaces and models for avionics components. Aviation companies can also reduce their inventory of spares by managing MOSArt module upgrades in a standardized manner while providing backward compatibility.


While there are many benefits of implementing MOSArt avionics, there are also challenges the aviation industry needs to consider closely. MOSArt requires a great deal of interdependent and standardization between regulatory authorities, avionics equipment suppliers, and avionics system users. Implementing MOSArt for existing systems requires a significant initial investment, although users would benefit from reductions in life-cycle costs.

Additionally, MOSArt may require more in-depth technical knowledge of each module for engineers responsible for the system. Finding suppliers that can meet MOSArt standards and provide specifications for individual modules could also be a challenge in the short term. Regulatory authorities granting certifications for components and modules in different regions could present challenges for global aviation companies.


MOSArt is an innovative technology that can help the aviation industry move towards safer, more efficient, and cost-effective solutions. While there are challenges associated with adopting MOSArt, the benefits outweigh them. MOSArt is the key to more modular, upgradable, interoperable, and safer aviation systems. MOSArt is bound to improve the safety, maintainability, cost-effectiveness, and supportability of aircraft, which are the crucial parameters for any aerial operation.

The aviation industry has already begun making progress towards implementing MOSArt avionics systems, and it remains to be seen how far this revolution in aviation technology will go. The good news is that MOSArt is becoming increasingly accepted and may soon become the new norm in the aviation industry.

If you want to learn more about the Modular Open System Architecture in aviation, check the following link, which provides more in-depth insights into MOSArt’s implementation and its benefits: ROCKWELL COLLINS – MOSArt for Commercial Aviation