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With DO-254/ED-80, the certification authorities have indicated that avionics equipment contains both hardware and software, and each is critical to safe operation of aircraft. There are five levels of compliance, A through E, which depend on the effect a failure of the hardware will have on the operation of the aircraft.
DO-254 had been considered too ambiguous on its application to simple hardware. This concern was the topic of the Certification Authorities Software Team's 2007 CAST-30 position paper, Simple Electronic Hardware and DO-254 and ED-80. In particular, Order 8110.105 originally provided clarification of DO-254 guidance for "simple" electronic hardware.
With the release of the expanded AC 20-152A and its companion AC 00-72, Best Practices for Airborne Electronic Hardware Design Assurance Using EUROCAE ED-80() and RTCA DO-254(), chapters 3 through 6 of FAA Order 8110.105A were removed in a Revision B released in 2024 to eliminate any duplication or conflict with the new ACs. The removed ...
CAST-31, Technical Clarifications Identified for RTCA DO-254 / EUROCAE ED-80 is a Certification Authorities Software Team (CAST) Position Paper. It is an FAA publication that "does not constitute official policy or guidance from any of the authorities", but is provided for educational and informational purposes only for applicants for software and hardware certification.
In 2003, the organization expanded its scope to address the published certification guidance for airborne electronic hardware provided in the RTCA publication DO-254 released in 2000. [ 1 ] With application of DO-178B, it was discovered that many projects were not complying with DO-178B, but there was also wide variations in how various ...
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RTCA DO-254: AC 20-170: Integrated Modular Avionics Development. Verification, Integration and Approval: RTCA DO-297: AC 20-189 Management of Open Problem Reports (OPRs) AC 20-1317: The Certification of Aircraft Electrical and Electronic Systems for Operation in the High Radiated Fields (HIRF) Environment: AC 25.1309-1: System Design and ...
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