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Wire System

How many Cables Should be Shielded?

A common question when it comes to designing an aircraft EWIS is which of the cables should be shielded? There are several standards, such as MIL-STD-461, “Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment” provide an excellent basis for topics and testing that should be considered. But for those that are […] Read more

Understanding unexpected arc track resistance test results

Lectromec has been testing wire for the past thirty years. We have seen nearly every conceivable variation of aerospace wire testing. Some tests are straight forward and require little or no additional explanation of the test results; other tests require a fair bit of explanation to understand the test itself and what the results mean. Read more

What is the impact of increased electrical loads on aircraft wire systems?

With More Electric Aircraft (MEA) being the big push in the industry, it is important to take a moment and think about the wiring system that is going to be supporting these new designs. The following are some of the consequences resulting from an increased electrical load on the aircraft wire system: How much wire […] Read more

Aircraft secondary harness protection with Gregg Turcich

Today Gregg Turcich sat down with Lectromec to discuss the topic of aircraft secondary harness protection, or what some call aerospace protective sleeves. Gregg is certainly qualified to talk about these topics because he has a degree in chemical engineering and decades of experience in aerospace technology. Gregg enumerates the four kinds of protection that […] Read more

Wire & Cable meets Lectromec: A summary of the interview

Last week Michael Traskos, President of Lectromec and noted EWIS expert, sat down with Mary Gannon, Senior Writer from Wire & Cable Tips, for a podcast interview. This article summarizes the interview. Read more

Overlooked but critical: Impact of storage on aircraft EWIS components

Aircraft maintenance engineers do not pay much attention to the impact of storage on electrical components. This article discusses several aspects of storage in the general category of the electrical wire interconnection system (EWIS), or aircraft EWIS components. We will examine the stowage of connectors, waveguides, harnesses, as well as capping and stowage of terminal […] Read more

Principles of aircraft wiring system safety

Principles of Aircraft Wiring System Safety System safety supports risk management with the ultimate goal of optimizing safety on aircraft systems. Risk management is a vital aspect of system development that takes effect during the design phase; however it also remains important during the implementation and sustainment phases of an aircraft lifecycle. Optimizing safety is […] Read more

5 lessons learned from NASA on electrical wiring interconnection systems (EWIS)

This is the second article on Lessons Learned from NASA. The documentation is based on NASA’s years of EWIS design and fabrication experience. Several of these EWIS-related recommendations are discussed. Read more

7 tenets of aircraft wire systems installation

There are a number of considerations when designing the installation of EWIS on aircraft wire systems. They include part selection, system integration, routing, safety and separation, regulation considerations, operational environments, maintenance, and obsolesces planning. In other words, a lot to consider. Back in 2004, Lectromec released, Ten commandments of Wire Maintenance. Below, Lectromec lists, the 7 […] Read more