Aviation EWIS Training

EWIS Stands for Electrical Wiring Interconnect System and it is an abbreviation for something which has been around a long time. In fact any wiring, even a single wire may be considered as EWIS.
 
Training related to Electrical Wiring Interconnect System (EWIS) was introduced by European Aviation Safety Agency (EASA) in August / September 2008. The details were to be found in 3 Acceptable Means of Compliance (AMC) documents, specifically AMC 20-21, AMC 20-22, AMC 20-23.
 
EWIS is Mandatory training requiring both Initial and Recurrent elements with details of the identified groups being detailed in AMC 20-22.

The stated objective of EWIS is focused on the need to “improve the airworthiness code for large airplanes together with the requirements for continued airworthiness in the field of electrical wiring interconnection systems. This is driven by the understanding that failures in those systems have been identified as causal factors in several incidents and accidents involving large airplanes”.

Tragedy struck on Friday, February 24, 1989 - when United Airlines Boeing 747 Flight 811 took off from Honolulu for Sydney, due to an electrical short circuit the latch actuators were powered in flight and the forward cargo door burst open. Nine passengers were sucked overboard and were never recovered blown out through the hole, their bodies were never recovered. This event was one of the earliest which was specifically connected to degradation of EWIS.
 
The period 1998 – 2005 heralded major changes including the addition of New Design Code requirements added FAR/CS25 – Subpart H addressing “Electrical Interconnection Wiring Systems (EWIS)”.
 
Part 21 changes also modified the related System Safety Assessment (SSA) which looks at the risk and criticality of the installation. This is part of the responsibility of the Certification Verification Engineer CVE (The CVE will sign off on the Mod or STC).
 
EWIS Degradation Is Typically Caused by any of the following elements - Vibration / Moisture / Poor Maintenance Standards, Indirect damage – cross coupling effects associated with other system fault conditions (Hot Air for example). Contamination – solid and fluid (Toilet Fluid). Possibility of Combustion from – Fuel, Hydraulic Oils, Dust and Lint.
 
Within each of these aspects may be found fundamental exposures related to the reasons why EWIS degrades. Our goal is to ensure we have the competence to identify the defects and determination in an effective way.

EWIS Initial and Recurrent training courses are available either classroom based with Sofema Aviation Services or as online training through SofemaOnline.com

SofemaOnline EWIS Initial training is available here for 117.50 USD per delegate and includes voice over.

About this course
Course type: Presentation with voice over
Approximate duration: up to 14 hours training
Category: EWIS
Price: 117.50 USD

EWIS Recurrent training is available here for 77.50 USD per delegate and includes voice over.

About this course
Course type: Presentation with voice over
Approximate duration: up to 7 hours training
Category: EWIS
Price: 77.50 USD

Also we offer EWIS for groups 3 and 4/3 to 6/5 and 6/ 7 and 8:

EWIS for Target Groups 3 and 4 with VO
EWIS for Target Groups 3 to 6
EWIS for Target Groups 5 and 6 with VO
EWIS for Target Groups 7 and 8 with VO

You can also benefit from our discounts for multiple enrollments.

If you have any questions regarding SofemaOnline please email us at online@sassofia.com