The need for Electrical Wiring Interconnect System EWIS training was substantially raised in profile following two very dramatic and significant aviation accidents.
The first accident affecting flight TWA 800 which exploded and broke up in mid air in the sea next to long island New York in 1996. The second affecting flight Swiss Air 111 in 1998.
Fuel Tank Safety Training also originates from research carried out in the aftermath of TWA 800 and several other fuel related accidents and incidents.
Avisa Eastern Europe Avisa-ee provides both FTS and EWIS training both as open training courses and in company training courses. The next open courses are being run in Sofia Bulgaria Thursday Sep 2nd 2010 FTS open access course and Friday Sep 3rd EWIS open access course.
EASA has mandated that fuel tank safety training is required for certain groups of maintenance staff. Why was this decision made? The reason essentially driven by the need to address inherent center fuel tank safety shortfalls on certain aircraft.
EASA has also mandated the requirement for Electrical Wiring Interconnect System Training and has issued 3 documents AMC 20-21 Programme to enhance aeroplane Electrical Wiring Interconnection System (EWIS) maintenance AMC 20-22 (AMC = acceptable means of compliance) and Aeroplane Electrical Wiring Interconnection System Training Programme AND AMC 20-23 Development of Electrical Standard Wiring Practices documentation.
What are the implications for operators and maintainers? The need to have appropriate procedures and in company training is essential as is the need to manage competencies and to ensure that training is effective and relavent.
FTS and EWIS training is mandatory of all staff who work on aircraft which carry more than 30 passengers or the equivalent size of Cargo aircraft.
What does it mean for you as an operator or maintainer? As an operator for example you should be satisfying yourself during audit that the Part 145 MRO organisation fully complies with both the regulatory requirements and your Part M requirements. (A hugely important element). As a Part 145 organisation you should satisfy yourself that you have appropriate Maintenance Organisation Exposition MOE Procedures, Competent and trained maintenance staff to comply with all the regulatory requirements, including the need for recurrent Fuel Tank Safety and EWIS
Both EWIS and FTS have a major impact on in-service continuing airworthiness management and maintenance of aircraft.
One example of a particular outcome was the need for management of the fuel tank related maintenance requirements and associated activities which have become known as CDCCL Critical Design Control Configuration Limitations. The comprehensive understanding of this is addressed during Fuel Tank Safety training.
CDCCL requirements have a direct bearing on the activities of the Part 145 maintenance organisation and the effective oversight by the operators Part M organisation.
Avisa-ee Fuel Tank Safety FTS and Electrical Wiring Interconnect System Training EWIS is normally available as in company or open trainings and address all regulatory issues associated with Fuel Tank Safety and EWIS and satisfies the mandatory training including examination recommended by EASA. For additional information about the trainings write us on office@avisa-ee.com or call us on +35929633166. www.avisa-ee.com

The need for Electrical Wiring Interconnect System EWIS training was not only identified but substantially raised in profile following two very dramatic and significant aviation accidents.
Since 2010 Avisa Eastern Europe Avisa-ee has started to deliver EWIS training both as open training courses and in company training courses.
The first accident affecting flight TWA 800 which exploded and broke up in mid air in the sea next to long island New York in 1996. The second affecting flight Swiss Air 111 in 1998.
The following paragraph was released by the FAA’s on November 8, 2007 and concerns aspects of EWIS on aircraft as to the reason for the increased concerns regarding electrical wiring systems in general.
“Safety concerns about wiring systems in aircraft were brought to the forefront of public attention by a midair explosion in 1996 involving a 747 airplane. Ignition of flammable vapors in the fuel tank was the probable cause of that fatal accident, and the most likely source was a wiring failure that allowed a spark to enter the fuel tank. All 230 people aboard the airplane were killed. Two years later, an MD–11 airplane crashed into the Atlantic Ocean, killing all 229 people aboard. Although an exact cause could not be determined, the presence of re-solidified copper on a portion of a wire of the in-flight entertainment system cable indicated that wire arcing had occurred in the area where the fire most likely originated.
Before these accidents wiring was not considered such a major issues and little emphasis was placed on the need to deliver appropriate training for Electrical Wiring Interconnect System EWIS.
In the aftermath of TWA 800 Several rule making committees were formed under the guidance of the FAA ,specifically the Ageing Transport Systems Rulemaking Advisory Committee (ATSRAC) was brought together with the support of external regulatory bodies to examine the current state of aging aircraft systems.
One of the main areas where special attention was focused was electrical wiring, its installation and the associated in service inspection and maintenance.
The Swiss accident some 2 years after TWA 800 only served to highlight the importance of delivering appropriate and effective Electrical Wiring Interconnect System EWIS Training and effective inspection procedures.
The FAA position on Electrical Wiring Interconnect System EWIS Training was modified dramatically by the findings.
In Europe, EASA has issued 3 documents AMC 20-21 Programme to enhance aeroplane Electrical Wiring Interconnection System (EWIS) maintenance AMC 20-22 (AMC = acceptable means of compliance)
Aeroplane Electrical Wiring Interconnection System Training Programme AND AMC 20-23 Development of Electrical Standard Wiring Practices documentation.
Avisa-ee is pleased to discuss your EWIS training needs and advises that we train effective Electrical Wiring Interconnect System EWIS Training and effective inspection procedures delivered to the highest professional standards. Please contact office@avisa-ee.com if you are interested in this training.