Shell to Shell Conductivity

Connector shell conductivity is critical for several types of applications. For example, harnesses that contain EMI sensitive circuitry are typically shielded and require good grounding and EMI protection as the signals pass through connectors. Often, this test is used after a thermal/environmental exposure cycle to determine performance after accelerated aging. For this test, a set […] Read more

Power over Ethernet and Potential Application Problems

September 15, 2017 Michael Traskos

The primary purpose of power over ethernet (PoE) is to use a single ethernet cable to provide a datalink and low-level power to devices. Since PoE became standardized in 2003, it has been implemented on a large range of ground based applications. There are several benefits to this implementation which include cable that is easily […] Read more

Selecting the Right Wires and Cables

August 30, 2017 Michael Traskos

In reviewing Lectromec’s articles, one can find over 250 articles covering different segments of aerospace wiring systems and lifecycle. For some, this may be an overload of information. But, if these articles were consolidated to their fundamentals, one can conclude that by selecting the right parts, installing them the right way, and doing the right […] Read more

Does a Connector’s Plating Type Impact Performance?

August 23, 2017 Michael Traskos

Design and installation of an aircraft’s electrical system has been made significantly easier with the adoption of modular harness design. This design pattern allows for discrete wiring sections to be designed and fabricated; this is only possible with the reliable performance of connectors. The connector-ization of harnesses has led some OEMs to build platforms where […] Read more

Building Wire Harnesses Right

June 28, 2017 Alexander Petrov

Some of the most important elements to the electrical and electronic functions of aerospace vehicles are the cable and wiring harnesses. Accurate transmission of control and data signals is heavily dependent on the cable reliability, wiring harnesses, and connectors. Best design and maintenance practices are crucial to their longevity and reliability. Eliminating stresses to the […] Read more

Updating Periodic Maintenance Procedures

June 1, 2017 Michael Traskos

An area of aircraft maintenance and wire system sustainment which has been around for the last decade is the enhanced zonal analysis procedures, or EZAP for short. EZAP is a set of procedures developed by the FAA during the 2000s detailing a systematic process for handling of wiring system maintenance based on zones. Lectromec has […] Read more

Signs of an Aging Wiring System

May 1, 2017 Michael Traskos

All components wear out over time, but the rate at which they degrade will vary depending on the quality of the product, how is it handled, and the environmental conditions in which the component is installed. To consider all the potential ways that an EWIS can fail, it can be overwhelming. As a brief list […] Read more

Basics of Connectors

March 21, 2017 Michael Traskos

Circular connectors have been a part of the aircraft industry for nearly 90 years. Clearly, because of this long history, many lessons have been learned on the construction and use of these connectors. But before anyone can really consider how to use the connector, there are basics that must be understood. This article reviews some […] Read more

Space Certified Wires and Cables

March 9, 2017 Michael Traskos

In the last three months, Lectromec has been asked numerous times about “Space Certified Wires” (SCW). The basic premise of these questions has been whether there is a defined set of criteria that would show a wire or cable is suitable for space applications. The primary concern raised is can there be a single set […] Read more

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Top 5 Articles of 2017