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Software safety (sometimes called software system safety) is an engineering discipline that aims to ensure that software, which is used in safety-related systems (i.e. safety-related software), does not contribute to any hazards such a system might pose. There are numerous standards that govern the way how safety-related software should be ...
The SOFTWARE SYSTEM is software safety class A if: the SOFTWARE SYSTEM cannot contribute to a HAZARDOUS SITUATION; or; the SOFTWARE SYSTEM can contribute to a HAZARDOUS SITUATION which does not result in unacceptable RISK after consideration of RISK CONTROL measures external to the SOFTWARE SYSTEM. The SOFTWARE SYSTEM is software safety class B if:
Test coverage in the test plan states what requirements will be verified during what stages of the product life. Test coverage is derived from design specifications and other requirements, such as safety standards or regulatory codes, where each requirement or specification of the design ideally will have one or more corresponding means of verification.
Minor - Failure slightly reduces the safety margin or slightly increases crew workload. Examples might include causing passenger inconvenience or a routine flight plan change. No Effect - Failure has no impact on safety, aircraft operation, or crew workload. DO-178C alone is not intended to guarantee software safety aspects.
Software assurance (SwA) is a critical process in software development that ensures the reliability, safety, and security of software products. [1] It involves a variety of activities, including requirements analysis, design reviews, code inspections, testing, and formal verification.
Functional safety is inherently end-to-end in scope. Modern systems often have software intensively commanding and controlling safety-critical functions. Therefore, software functionality and correct software behavior must be part of the Functional safety engineering effort to ensure acceptable safety risk at the system level.