Electrical Wiring Interconnection System (EWIS)


Initial Training

The EWIS initial training covers all the topics of the EWIS Minimum Initial Training Program given in AMC 20-22.

Target GroupDuration
Group 1 & 205 days
Group 302 days
Group 401 day
Group 502 days

Continuation Training

The EWIS continuation training should be completed within two years after the completion of the initial training and the followers of this course shall review the material covered in the initial training specific to the target group and any new material or revisions to the publications.

The training course for component maintenance personnel is part of the “Workshop Fuel Tank Safety and EWIS Continuation Training course” and for all other personnel it is part of the “A320/A330/A340 Refresher Training course.”

Entry Requirement

Target GroupDescriptionApplicable Staff from SriLankan Aircraft Maintenance Organisation
Group 1 & 2Qualified staff performing EWIS MaintenanceB1, B2 & C Certifying staff
B1 & B2 Support staff
Avionics Component Certifying staff
Line/Base/Workshop Avionics Technicians & Mechanics
Group 3Qualified staff performing electrical/avionic engineering on in-service aeroplaneTechnical Services staff Electrical/Avionics
Group 4Qualified staff performing general maintenance/inspections not involving wire maintenance (LRU change is not considered wire maintenance)Cat A Certifying staff
Specialized Services staff
Non Avionics Component Certifying staff
Line/Base/Workshop Non Avionics Technicians & Mechanics
Group 5Qualified staff performing other engineering or planning work on in-service aeroplaneProduction Planning Engineers & Supervisors
Technical Service staff Mechanical/Structural