The Deos Real-Time Operating System is the most deployed RTOS in avionics history.

Deos is to DO-178C/ED-12C Design Assurance Level A (DAL A) and addresses the issues of high robustness for avionics and safety critical applications. Deos was built from the ground up with plans and procedures created to the guidance of DO-178 starting with its requirements for its first line of code. In fact, Deos is the only verified time and space partitioned COTS RTOS that has been created using RTCA DO-178 DAL A processes from the very first day of its product development.

If you need safety-critical performance, the choice is DDC-I. Deos is:

  • Certified to DO-178C/ED-12C DAL A, is flying in tens of thousands of aircraft, and has logged millions of flight hours
  • Multi-core enabled through its SafeMC™ Technology giving developers the ability to bound resource contention and safely schedule processes on multiple cores
  • Time and space partitioning, and explicit resource allocation enforcement inherently support isolation of computing and I/O resources, leading to a secure system design
  • Modular design – speeds updates to existing systems or redeployment to other platforms

Example Applications:

Deos is used to manage resources and hard partition avionics applications for a multitude of flight critical functions that require bounded processing, high determinism and high throughput. Deos is used in both federated and IMA (integrated modular avionics) systems. Applications include: