New Guidance for Wiring System Inspection

June 21, 2019 Michael Traskos

Back in November 2018, the US Navy released the second revision to the military handbook on “Guidelines for inspection of aircraft electrical wiring interconnect systems” (MIL-HDBK-522). This handbook is a guide for the aircraft EWIS inspection and provides a lot of detailed examples of wiring evaluation from beginning to end of the EWIS. Read more

Getting the Most from Visual Inspections

October 12, 2017 Michael Traskos

Good data is anything that can be turned into actionable information; this is a critical element in nearly every project. For those that regularly perform EWIS inspections, unless the data is gathered in such a way to improve the aircraft reliability, address technical errors, and/or be used as part of trend analysis, the effort is […] Read more

11 improvements to MIL-HDBK-522 for aircraft wire systems

March 2, 2016 Michael Traskos

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

EWIS system design: Aircraft wire maintainability

January 19, 2016 Michael Traskos

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

The benefits of aircraft electrical system analyzers with Chris Teal

January 5, 2016 Lectromec Team

Welcome to the Lectromec podcast with John Gilroy. The podcast that helps you improve your understanding of aircraft electrical systems. Every month we interview experts in the public and private sector to help you increase your knowledge of the design and maintenance of aerospace wire systems. Today’s guest is Chris Teal, the Marketing Director from […] Read more

How to identify an aircraft wire or cable

November 30, 2015 Lectromec Team

If you are trying to identify an aircraft wire or cable, you may want to take advantage of the lessons Lectromec has learned in the past three decades. Because we are in the business of evaluating electrical systems, we frequently open up boxes where we must determine origin and manufacturer of wire and cable. This […] Read more

Completed aircraft wire harness testing

October 30, 2015 Michael Traskos

When it comes to examining aircraft wire systems, a lot of time is spent examining the performance of individual components like wires, cables, connectors, and pins. However, when we install complete aircraft wire harnesses, they must work in the fully assembled aircraft. They must endure the harsh conditions, various environments, and regular maintenance. To ensure […] Read more

Taking a look at aircraft wire testing and evaluation

July 15, 2015 John Gilroy

For the past thirty years, Lectromec has been a leader in the area of aerospace wire testing and evaluation. In order to provide aerospace professionals with information to increase their knowledge of this complex topic, we began creating educational materials. Accordingly, Lectromec has published almost two-hundred articles, distributes a monthly newsletter, has a podcast, and […] Read more

What do the results of arc track resistance testing mean?

April 9, 2015 Michael Traskos

Wire manufacturers must ensure that their products can withstand a wide variety of tests. One important test for aerospace professionals is called the “arc track resistance”test. This test is significant because an unconstrained electrical arc can impact the safety and reliability of the Electrical Wiring Interconnection System (EWIS). In this article we will define the […] Read more

Aircraft wire inspection? Time tested guidelines

March 18, 2015 Carina Cannon

Performing routine aircraft wire systems visual inspections is a critical aspect of maintaining aircraft airworthiness and extending the component lifecycle. A visual inspection is the first step in assessing the condition of a component or determining what future steps need to be taken. This article discusses recommended techniques based on MIL-HDBK-522, which provides EWIS inspection […] Read more