EWIS Target Groups 1 & 2

Course Overview

Aviation wiring is not fit-and-forget. It is a dynamic, degrading system.

For decades, maintenance treated wiring as a background utility. EASA AMC 20-22 changed that, elevating EWIS to the level of primary structure. This course goes far beyond a simple tick-box compliance exercise. Designed specifically for the realities of the hangar floor, this high-fidelity training targets Groups 1 & 2: the personnel physically touching, modifying, and inspecting the aircraft’s electrical nervous system.

We strip away the academic fluff and focus on the What, Why, and How. You won’t just learn what a proper crimp looks like; you will learn how to verify it deep inside a complex fuselage, why bend radii dictate signal integrity, and how to effectively navigate the Standard Wiring Practices Manual (SWPM) to ensure every repair outlasts the aircraft.

Whether you are pulling new looms during a heavy check or signing off a complex avionic defect on the line, this course ensures you have the practical competence to keep the aircraft, and your license, safe.

Target Audience

EASA AMC 20-22 distinctly categorizes aviation personnel to ensure training matches their specific operational exposure to wiring systems. This comprehensive bundle satisfies the regulatory requirements for the two most critical categories:

• Target Group 1 (Staff performing EWIS maintenance): These are the technicians who physically install, repair, and modify aircraft wiring systems. They require the deepest level of training on SWPM navigation, splicing, crimping, routing, and proper tool usage.
• Target Group 2 (Staff performing EWIS inspections): These are the inspectors and certifying staff who verify the integrity of the wiring. Their training focuses heavily on identifying degradation, assessing physical clearances, recognizing chafing risks, and ensuring strict compliance with manufacturer standards.

This course combines these requirements into a single, cohesive training program. It is highly recommended and practically mandatory for:

• Part-145 Certifying Staff: B1 (Mechanical) and B2 (Avionics) Licensed Engineers.
• Base & Line Maintenance Technicians: Staff actively performing maintenance on or around EWIS.
• Quality & Inspection Staff: Personnel responsible for verifying the integrity of EWIS repairs and installations.
• CAMO Engineers (Optional but Recommended): Technical services and reliability engineers who design repairs and write engineering orders impacting wiring zones.

Key Learning Objectives

Upon successful completion of this high-fidelity course, learners will achieve the following outcomes, categorized by EASA-aligned Knowledge, Skills, and Competence:

Knowledge

• Regulatory Framework: Understand the history and critical importance of EASA AMC 20-22 and why EWIS is now classified as a primary structural element.
• Degradation Mechanics: Identify the specific environmental and operational factors (vibration, thermal cycling, moisture, chemical contamination) that degrade wiring integrity over time.
• System Interactions: Comprehend the principles of zonal safety and the critical clearance requirements between EWIS and fluid/mechanical systems.
• Documentation Architecture: Understand the layout, purpose, and hierarchy of the manufacturer’s Standard Wiring Practices Manual (SWPM).

Skills

• SWPM Navigation: Rapidly and accurately locate the correct standard practices, tooling requirements, and material specifications within the SWPM for specific repair scenarios.
• Defect Identification: Visually detect subtle, early-stage signs of chafing, arcing, insulation cracking, and connector corrosion during General Visual (GVI) and Detailed (DET) inspections.
• Precision Application: Apply the correct physical tolerances for wire routing, bend radii, clamping, and tie-wrapping as dictated by the manufacturer.
• Contamination Control: Execute Clean-As-You-Go procedures effectively to prevent FOD and chemical damage during adjacent maintenance tasks.

Competence

• Independent Assessment: Safely evaluate the airworthiness of an electrical installation or repair in a complex, high-density aircraft zone.
• Risk Mitigation: Proactively prevent EWIS degradation by recognizing and correcting poor maintenance practices (e.g., using wires as handholds, improper tool use) on the hangar floor.
• Airworthiness Release: Confidently return aircraft systems to service, knowing that all EWIS interactions and repairs meet strict EASA compliance and manufacturer safety standards.