Deos™, DDC-I’s safety-critical time and space partitioned DO-178C Design Assurance Level A (DAL A) certifiable real-time operating system (RTOS) for Avionics, supports ARINC 653 APEX, Rate Monotonic Scheduling (RMS), and is targeted at the FACE Safety Base Profile. It has been field proven as a safety-critical certifiable RTOS since its first verification and audit to DAL A by Transport Canada in 1998, and it has been certified and flying in 10’s of thousands of aircraft. Since the initial certification, it has continually evolved throughout the last two decades with new processors and features in subsequent baselines, and it has been successfully audited by the world’s various governmental certification authorities (FAA, ENAC, JAA, EASA, CAAC, and others) and Airframe and Avionics Supplier Designated Engineering Representatives (DERs).

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