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By: Michael Traskos

EWIS SLEP Reassessment

Michael Traskos
In past articles, we have talked about a comprehensive assessment of Electrical Wire Interconnected System (EWIS) Service Life Extension Program (SLEP) that is possible with following the guidance laid out in MIL-HDBK-525. One of the areas that Lectromec did not cover thoroughly in these articles is what to do five or ten years after the […] Read more

Use of Cables on Aircraft – Part 3 – Testing

Michael Traskos
To continue the series of articles on NEMA27500 cables discussing their use on aircraft (part 1 and 2), this article focuses on the several tests that are necessary for cable verification and certification. There is some level of performance verification for each part of an aircraft cable. Most cable assessment tests focus on the performance […] Read more

Use of Cables on Aircraft – Part 2

Michael Traskos
In this article, we will continue the discussion by exploring the NEMA27500 cable. Four sections were covered in the Part 1 (Specification, identification and shield coverage, conductor size, and wire specification). The remaining three parts covered here are the basic component wires, shielding materials, and the jacket materials. Read more

Use of Cables on Aircraft – Part 1

Michael Traskos
Electrical wire cables are an integral part of an aircraft’s Electrical Wire Interconnection System (EWIS). It would be difficult to imagine the design of an aircraft electrical system without the use of electrical cables. The use of cables in aircraft has simplified the formation of wire harnesses and installation of electrical components (think of the […] Read more

Electrical Fault and Fire Prevention and Protection

Michael Traskos
The prevention of electrical fires is a common goal for most aircraft systems. Advisory Circular (AC) 25-16, “Electrical fault and Fire Prevention and Protection”, released in 1991, can be considered one of the precursors to the Electrical Wiring Interconnection System (EWIS) regulations. Although the document is now 25 years old as of last month, AC 25-16 provides a wide variety of recommended practices that are commonplace in the EWIS design and installation. Here we review some of the key points addressed in AC 25-16 and considerations with modern EWIS design with respect to electrical fault and fire prevention and protection. Read more

High-speed footage of wire failure near fuel line

Michael Traskos
Introduction As with most fields, the more we learn about a particular topic, the better our understanding of its complexity and the finer details involved. One area Lectromec has done extensive research in is the potential impact of wire failure and electrical arcing (you can find several blog posts and white papers here). In this […] Read more

Latest news on aircraft wire from the SAE’s Spring 2016 Wire and Cable Committee Meeting

Michael Traskos
he Spring 2016 SAE AE-8A and 8D wire cable standard and wiring installation guidance committee meetings were held last week in Denver, Colorado. The continuing process of wire improvement, both in terms of product and installation, was held over a three-day period covering dozens of topics critical to improving the reliability of EWIS. The following are some of the updates from this meeting. Read more

EWIS component test listing now available

Michael Traskos
Find information and pricing for aerospace electrical component tests for qualification, verification, and performance assessment. Read more

A case study addressing EWIS sustainment needs

Michael Traskos
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

Michael Traskos
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