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KU Aerospace Short Course Program

Electrical Wiring Interconnection System (EWIS) Safety Assessment - 25.1709

Instructor: Thomas N. Taylor
Printable Course Information (PDF)

Course Schedule

September 11-15, 2017, San Diego, California

Early registration course fee: $2,495 if you register and pay by July 28, 2017

Regular registration course fee: $2,695 if you register and pay after July 28, 2017

San Diego Lodging and Travel Information

You can also bring this course to your workplace. Learn more about our on-site program.


This course will focus on the requirements and methods that can be used to demonstrate compliance to 14 CFR 25.1709 (EWIS Safety Analysis). The discussion will examine the use of FAA AC 25.1701-1 to prepare a Functional and Physical Analysis. The course will also include an overview of the EWIS requirements included in 14 CFR Part 25, subpart H.

Includes instruction, course materials, refreshments and lunches. The course notes are for participants only and are not for sale.


  • A detailed review of FAA AC 25.1701-1C and 25.1709 flow diagram
  • Practical EWIS example for new and modified aircraft
  • 25.1709 Functional and Physical Analysis Development through Team Workshops

Who Should Attend?

The course is designed for engineers, technicians and managers involved in the design and certification of Transport Category Aircraft. The course is intended for both Original Equipment Manufacturers (OEM) and aircraft modifiers.

Times / CEUs

31.50 classroom hours
3.150 CEUs

Certificate Tracks

Aerospace Compliance, Aircraft Maintenance and Safety, Avionics and Avionic Components, Electrical Wiring Interconnection System (EWIS)

Learning Objectives

  • The history and background of 25.1709
  • The difference between 25.1309 and 25.1709
  • Methodology and techniques for demonstrating compliance to 25.1709

Course Outline

Day One

  • Introductions
  • Brief overview of EWIS definitions and regulations – Part 25, Subpart H
  • Comparison of 25.1309 and 25.1709
  • FAA Advisory Circular, 25.1701-1 walk-thru
  • Project planning – resources, requirement, process and tool development, analysis

Day Two

  • EWIS considerations used in functional and physical analysis
  • 25.1709 functional analysis and AC 25.1701-1 flowchart
  • Functional analysis case study
  • Team breakout session
  • Functional failure analysis team case study

Day Three

  • Day 2 recap – functional analysis
  • 25.1709 physical analysis discussion and AC 25.1701-1 flowchart
  • Single system failure vs. multiple system failure
  • Airplane system interdependencies (integrated vs. federated systems)
  • Team breakout session
  • Physical failure analysis team case study

Day Four

  • Day 3 recap – physical analysis
  • Continuation of physical failure analysis methodology
  • Team presentations – physical analysis

Day Five

  • CFR 25.1709 team wrap-up
  • Final 25.1709 discussion and questions
  • Lessons learned and EWIS take-aways
  • EWIS final examination

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On-site Contact Information

To learn about bringing a course to your workplace, contact Sarah Williams, on-site program manager, for a no-cost, no-obligation proposal.
Email ProfessionalPrograms@ku.edu
Phone 913-897-8782

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