Electrical Wiring Interconnect System EWIS Training was issued as an EASA requirement in the summer of 2008. There is much confusion across industry as to the requirements to comply with the need for training EWIS within the Part 145 and Part M environment.
AMC 20-22 makes It very clear as to the requirements which are to be complied with to ensure the organisation remains in conformity with EASA regulatory requirements. Ultimately in accordance with the terms of the approval issued to Operators and MRO’s It is the Operators and Maintenance Organisation Responsibility to comply with the requirements of Electrical Wiring Interconnect Systems working practices and procedures including specifically EWIS training. For details concerning the requirements of EWIS training please see AMC 20-22. Sofema Aviation Services offer a 3 Day in company Training to allow you to manage and deliver your own EWIS training to ensure compliance with the requirements of AMC 20-22. please contact SAS at office@sassofia.com .
The origins of the requirement for EWIS Training go back to a number of incidents which have had a catastrophic effect on the industry with instances of in-flight smoke and fire events in which contaminants were ignited by electrical faults which allowed a fire to be sustained and spread. Considerable research was conducted by The FAA and the National Transportation Safety Board (NTSB) together with the European Stake holders.
The outcomes were conclusive and determined the specific need for EWIS Training for example during examination of a number of aircraft, wiring was found to be contaminated with items such as dust, dirt, metal shavings, lavatory waste water, coffee, soft drinks, and napkins. On occasion wire bundles and surrounding areas have been found to be completely covered with dust.
EASA the FAA & Industry have realized that current maintenance practices may not be enough to address aging non-structural systems. This includes Electrical Wiring Interconnect Systems EWIS.
It has been demonstrated that over time, insulation can deteriorate causing cracks which may expose the conductor. Age is not the only cause of EWIS and wire degradation, the likelihood remains of EWIS damage from inadequate or inappropriate maintenance, contamination, improper repair, or mechanical damage.
This deterioration has found to increases over time In addition research has demonstrated that wiring can be harmed by accidental damage when maintenance is being performed on other aircraft systems.
Harmonized working groups have developed a standard which should become the in company baseline for delivering training in EWIS related activities and inspections, Sofema Aviation Services would be pleased to support your in-company training requirements in respect of Electrical Wiring Interconnect System EWIS training and competency management.
Sofema Aviation Services based in Sofia deliver regulatory training including EWIS training for Part 145 and MRO’s across a range of regulatory areas, please visit www.sassofia.com for details.
