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The flexible nature of DO-178C's processes and entry/exit criteria make it difficult to implement the first time, because these aspects are abstract and there is no "base set" of activities from which to work. The intention of DO-178C was not to be prescriptive. There are many possible and acceptable ways for a real project to define these aspects.
Various standards suggest different levels, e.g. Software Levels A-E in DO-178C, [4] SIL (Safety Integrity Level) 1-4 in IEC 61508, [1] ASIL (Automotive Safety Integrity Level) A-D in ISO 26262. [2] The assignment is typically done in the context of an overarching system, where the worst case consequences of software failures are investigated.
The Advisory Circular AC 20-115( ), Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( ) (previously Airborne Software Assurance), recognizes [1] the RTCA published standard DO-178 as defining a suitable means for demonstrating compliance for the use of software within aircraft systems.
MC/DC is used in avionics software development guidance DO-178B and DO-178C to ensure adequate testing of the most critical (Level A) software, which is defined as that software which could provide (or prevent failure of) continued safe flight and landing of an aircraft.
A number of standards are applicable to high-integrity software, including: DO-178C, Software Considerations in Airborne Systems and Equipment Certification [4] CENELEC EN 50128, Railway applications - Communication, signalling and processing systems - Software for railway control and protection systems [5]
Some representative standards include MIL-STD-2167 for military systems, or RTCA DO-178B and its successor DO-178C for civil aircraft. The regulatory requirements for this software can be expensive compared to other software, but they are usually the minimum that is required to produce the necessary safety.
Los Angeles Rams quarterback Matthew Stafford finished out the season with a rib injury, his wife, Kelly Stafford, confirmed.
CERT Coding Standards; Certification Authorities Software Team; CFexpress; CIM Schema; Common Attack Pattern Enumeration and Classification; ... DO-178B; DO-178C; DO ...
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