What Is DO-178C?

DO-178C is an updated version of DO-178B, introducing a more flexible and risk-based approach to software development and testing in aviation systems. DO-178C places greater emphasis on the verification process and incorporates lessons learned from DO-178B in software testing.

The DO-178 standard defines five levels of criticality: Level A (Catastrophic), Level B (Hazardous), Level C (Major), Level D (Minor), and Level E (No Safety Effect). These levels categorize the impact of a failure on the overall safety of the aircraft.

The three levels of criticality in software development are Level A, Level B, and so on, as defined by safety standards like DO-178C. Level A represents the highest criticality, requiring the most rigorous testing and safety measures.

Achieving DO-178C compliance involves following its guidelines for software development in airborne systems. This includes rigorous planning, documentation, testing, and verification processes to ensure safety and reliability.

The tool qualification process for DO-178C involves assessing and documenting the suitability of software tools used in aviation systems. It ensures that these tools meet the safety and reliability standards required for airborne systems.