Sofema Aviation Services (SAS) considers key aspects related to EWIS Design Considerations Electrical Wiring Interconnection Systems (EWIS) are a critical safety component of modern aircraft. Historically overlooked or treated as secondary to other systems, poor EWIS design has contributed to multiple catastrophic failures (TWA 800 – Swissair 111 –United Airlines (UAL) Flight 811 usually with…

Sofema Aviation Services (SAS) considers key elements of the EASA Part 21 EWIS design and best practice implementation. Introduction EASA Part 21 Design Organisations Subpart J face significant challenges in managing and maintaining Electrical Wiring Interconnect Systems (EWIS). Historical evidence, including major accidents has shown that improper EWIS design, maintenance, and oversight can lead to…