Abstract
A safety assessment for electrical wiring interconnection system (EWIS) was required, since the 4th revision of CCAR-25. At present, there is no systematic safety assessment method, which affects the airworthiness certification of military and civil aircraft. According to the safety assessment requirements, the requirements of new regulation 25.1709 were interpreted. Combining with the current situation of military and civil aircraft, the safety design and analysis method was established, and the safety verification technology was expanded, which can effectively identify the potential safety hazards of EWIS. Through the development of reasonable and effective mitigation to avoid the occurrence of the potential safety hazards, it can provide support and certification for airworthiness. Taking the thrust reverse system as an example, the safety application method of quantitative and qualitative for EWIS was explored. The results show that the proposed EWIS safety design and analysis method can effectively identify the potential safety hazards, and guide the safety design of EWIS.
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