EWIS TG 3,4&5 INITIAL 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 EWIS initial course is for;

Target Group 3: Qualified staff performing electrical/avionic engineering on in-service aeroplane.
Target Group 4: Qualified staff performing general maintenance/inspections not involving wire maintenance (LRU change is not considered wire maintenance)
Target Group 5: Qualified staff performing other engineering or planning work on in-service aeroplane

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.
1. Safety practices
2. Electrostatic discharge sensitive (ESDS) device handling and protection
7. 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 documentation as applicable

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, and their criteria and standards
14. Human factors in inspection
15. Zonal areas of inspection
16. Wiring system damage

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

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