Use of Cables on Aircraft – Part 1

July 6, 2016 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

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

4 aspects of wiring selection for special aircraft applications

February 4, 2016 Michael Traskos

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

EWIS regulatory compliance: 25.1703, Part I

June 5, 2015 Michael Traskos

Proper aircraft wire installation begins with selecting the right components. There will never be a perfect component, because there will always be tradeoffs between performance, cost, weight, and reliability. Engineering is what allows us to weigh all these factors and determine which one is the most important. The decision matrix includes requirements of the electrical […] Read more

A new standard for EWIS design: IPC-D-620

May 19, 2015 Michael Traskos

As EWIS (Electrical Wiring Interconnection System) engineering is becoming a more mature field, additional standards and requirements are being developed. The latest of these EWIS design standards is the IPC-D-620, “Design and Critical Process Requirements for Cable and Wiring Harnesses.” This pending standard, coupled with the design requirements of IPC (Institute of Printed Circuits) documents, […] Read more

MIL-HDBK-454 handbook guidelines for EWIS components

November 14, 2014 Carina Cannon

This article covers eight out of the 78 military guidelines from the General Guidelines for Electronic Equipment handbook (MIL-HDBK-454) applicable to wire system component testing, EWIS component selection, and good wiring practices. The handbook covers guidelines for the selection, handling, and application of electronic equipment on aircraft. Read more

EWIS regulatory compliance with 25.1707, Part VII

February 28, 2014 Michael Traskos

This is the final article on the series devoted to the FAA regulation 25.1707 on EWIS separation. The previous six articles in this series are listed below: Jan 20, 2014 Part I: Damage assessment for 25.1707 Jan 28, 2014 Part II : EMI compliance in 25.1707 Feb 7, 2014 Part III: Heavy Current Cables in […] Read more

EWIS regulatory compliance with 25.1707, Part VI

February 25, 2014 Michael Traskos

This is the sixth article in the series focused on FAA 25.1707 that discusses electrical wire interconnection system (EWIS). The previous articles in this series are listed below: Jan 20, 2014 Part I: Damage assessment for 25.1707 Jan 28, 2014 Part II : EMI compliance in 25.1707 Feb 7, 2014 Part III: Heavy Current Cables […] Read more

EWIS regulatory compliance with 25.1707, Part V

February 20, 2014 Michael Traskos

Each of the last four articles has focused on a subpart of the FAA 25.1707 regulation. Jan 20, 2014 Part I: Damage assessment for 25.1707 Jan 28, 2014 Part II : EMI compliance in 25.1707 Feb 7, 2014 Part III: Heavy Current Cables in 25.1707 Feb 15, 2014 Part IV: Grounding and Power Separation Because […] Read more

EWIS regulatory compliance with 25.1707, Part IV

February 14, 2014 Michael Traskos

This article focuses on the grounding and separation of power sources; it is a continuation of a series of articles discussing the Federal Aviation Administration (FAA)’s EWIS certification requirements of 25.1707. If you missed the last couple of articles on this topic, you can see the list below: Jan 20, 2014 Part I: Damage assessment […] Read more

Standard & Regulation