Locations / Date

Hoofddorp, Netherlands

15 May 2019 - available

Vienna, Austria

Dates not yet confirmed

Abu Dhabi, United Arab Emirates

Dates not yet confirmed


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Training courses

EWIS (Electrical Wiring Interconnection Systems) Training Course


On 5th Sept. 2008, the European Aviation Safety Agency issued a revised certification standard for large aircraft, CS-25, Amendment 5. The new CS-25 contains the consolidated outcome to NPA 2007-01 in regards to the Aeroplane Electrical Wiring Interconnection System (EWIS)” requirements as an outcome of the Enhanced Airworthiness Program for Airplane Systems (EAPAS).

This new amendment requires operators, CAMOs and maintenance organisations to train their personnel with regards to EWIS as per the AMC 20-22.

This training provides guidance for personnel directly involved in the maintenance management, maintenance and inspection of EWIS (Target Group 1 and 2) as well as for personnel performing general maintenance/inspection not involving wire maintenance.

Part 21 Design training issues will be covered in a separate Training Class.


Course Content

The course topics are selected to satisfy Part 145 and Part M needs such as:   


  • EAPAS / EWIS (AMC 20-22) Requirement Evolution
  • General Electrical Wiring Interconnection System Practices
  • Wiring Practices Documentation
  • EWIS Inspection
  • Housekeeping / Contamination Sources
  • Wires: Types and applications
  • Connective Devices


Learning Objectives


After training, the person is able to properly evaluate the EWIS and effectively use the manufacturers Chapter 20 Standard Wiring Practice Manual for that aeroplane. The training programme includes: wiring system condition, applicable repair schemes, wiring modifications and ancillary repairs to wiring systems and components.

The objectives of the course are to satisfy the needs of the classroom training requirements published by EASA.

Who should take this course

This training is targeted at each person who performs aeroplane maintenance or inspections on EWIS and/or structure in close proximity to EWIS (Target Group 1 and 2).


Basic knowledge of related Maintenance (Part 145) and/or Maintenance Management (Part M) regulations.


1 day (starting at 09:00 and finishing at around 17:00)