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A case study addressing EWIS sustainment needs
This white paper is a case study on recent work performed by Lectromec for the U.S. military to achieve Electrical Wire Interconnection Systems (EWIS) sustainment of an aircraft fleet. Read more
Joint Services Wiring Action Group (JSWAG) Spring 2016 updates
The Spring 2016 Joint Services Wiring Action Group (JSWAG) meeting was held in San Diego last week. Lectromec had the fortune to be able to attend this great meeting that included participants from all branches of the U.S. military as well as several foreign organizations. For those not familiar with the work of the JSWAG, […] Read more
What do advanced arc fault circuit protection devices protect?
The use of circuit protection devices is a fundamental part of circuit design; it is difficult to think of systems without them. For the aircraft industry, thermal circuit protection devices have been the primary circuit protection components for decades, and there is good reason for this: flight crew and maintenance personnel are familiar with their operation, and they are reliable and relatively low cost. Read more
11 improvements to MIL-HDBK-522 for aircraft wire systems
One of the best handbooks on EWIS routine inspection for aircraft wire systems is the military handbook MIL-HDBK-522, Guidelines for Inspection of Aircraft Electrical Wiring Interconnect Systems. The first version of the handbook was released in 2010 and provided a good starting point for EWIS inspection guidance. This guidance has been updated with the release […] Read more
How to automate aerospace bent pin wire analysis with Nat Ozarin
Today’s guest is Nat Ozarin, Senior Software and Reliability Engineer with The Omnicon Group Inc. He has decades of experience troubleshooting a wide range of issues with a particular emphasis on aircraft electrical systems. During the interview Nat reviews his academic and corporate background. He details his frustration with attempting to do bent pin analysis […] Read more
High temperatures and testing electrical aircraft components
An aircraft must perform under a wide range of temperature conditions. As a result, designers must pay attention to testing electrical aircraft components to see if they can endure constant changes in temperatures over the years. Today we have a short video that gives an overview of what role a scientific oven plays in testing […] Read more
4 aspects of wiring selection for special aircraft applications
Not all wires are created equal. Through the years, Lectromec has learned the best practices for wire selection that would ensure the Electrical Wire Interconnect Systems’ (EWIS) longevity. There are thousands of wire standards for the aerospace industry. These include: the National Electrical Manufacturers’ Association (NEMA) standards, the Society of Automotive Engineers (SAE) standards, as […] Read more
Aircraft wire systems: Bent pin analysis
Previous Lectromec articles have focused on certain parts of system design such as the physical separation between systems. In particular, the articles have focused on the wiring. In this article, we will switch our attention to a different, but no less important, area: the Electrical Wiring Interconnect Systems (EWIS) connector assessment. Specifically, we will examine […] Read more
EWIS system design: Aircraft wire maintainability
The SAE Wire Installation Guidance document, AS50881, provides guidance on considerations for designing an aircraft wiring system. In this article, we examine sections of the AS50881 and discuss how each of these sections should be addressed and what factors should be considered when designing an aircraft’s Electrical Wire Interconnection System (EWIS). For this area, there […] Read more