EWIS TG 1&2 Continuation Course
This EWIS course complies with EASA AMC 20-21, AMC 20-22, and FAR 25, Subpart H—Electrical Wiring Interconnection Systems (EWIS).
About
This refresher/continuation course is designed for two target groups:
Target Group 1 – Personnel performing maintenance on Electrical Wiring Interconnection Systems. This includes individuals directly maintaining or modifying EWIS, such as FAA A&P technicians and EASA Part 66 Cat B1 and B2 personnel.
Target Group 2 – Personnel performing maintenance inspections on EWIS. This includes those who conduct inspections but do not directly maintain or modify EWIS, such as FAA A&P technicians and EASA Part 66 Cat B1 and B2 personnel.
As engineers ourselves, we aimed to make the mandatory EWIS training more engaging and relevant than traditional courses. By incorporating current incidents and accidents relevant to aircraft engineering, we seek to create a more enjoyable and informative learning experience. Our course includes up-to-date information on wiring, electrical manuals, and practical knowledge that engineers can apply directly in their work.
Detailed Syllabus
Module A – General Electrical Wiring Interconnection System Practices
Know or demonstrate safe handling of aeroplane electrical systems, line replaceable units (LRU), tooling, troubleshooting procedures, and electrical measurement.
- Safety practices
- Electrostatic discharge sensitive (ESDS) device handling and protection
- Tools, special tools, and equipment
- Verifying calibration/certification of instruments, tools, and equipment
- Required wiring checks using troubleshooting procedures and charts
- Measurement and troubleshooting using meters
- LRU replacement general practices
Module B – Wiring Practices Documentation
Know or demonstrate the construction and navigation of the applicable aeroplane wiring system overhaul or practices manual.
8. Standard wiring practices manual structure/overview
9. Chapter cross-reference index
10. Important data and tables
11. Wiring diagram manuals
12. Other applicable documentation
Module C – Inspection
Know the different types of inspections, human factors in inspections, zonal areas, and typical damages.
13. General visual inspection (GVI), detailed inspection (DET), special detailed inspection (SDI), and zonal inspection criteria and standards
14. Human factors in inspection
15. Zonal areas of inspection
16. Wiring system damage
Module D – Housekeeping
Know the contamination sources, materials, cleaning, and protection procedures.
17. Aeroplane external contamination sources
18. Aeroplane internal contamination sources
19. Other contamination sources
20. Contamination protection planning
21. Protection during aeroplane maintenance and repair
22. Cleaning processes
Module E – Wire
Know or demonstrate the correct identification of different wire types, their inspection criteria and damage tolerance, repair, and preventative maintenance procedures.
23. Wire identification, type, and construction
24. Insulation qualities and damage limits
25. Inspection criteria and standards for wire and wire bundles
26. Wire bundle installation practices
27. Typical damage and areas found (aeroplane specific)
28. Maintenance and repair procedures
29. Sleeving
30. Unused wires – termination and storage
31. Electrical bonding and grounds
Module F – Connective Devices
Know or demonstrate the procedures to identify, inspect, and find the correct repair for typical types of connective devices found on the applicable aeroplane.
32. General connector types and identification
33. Cautions and protections
34. Visual inspection procedures
35. Typical damage found
36. Repair procedures
Module G – Connective Device Repair
Demonstrate the procedures for the replacement of all parts of typical types of connectors found on the applicable aeroplane.
37. Circular connectors
38. Rectangular connectors
39. Terminal blocks – modular
40. Terminal blocks – non-modular
41. Grounding modules
42. Pressure seals
