Course Overview
You do not have to hold a crimping tool to compromise an aircraft’s electrical system.
EASA EWIS training is not exclusively for the avionics department. This high-fidelity course strictly targets EWIS Target Groups 4 and 5: the general mechanics who work around critical wiring, and the planners who schedule the maintenance. The focus here is entirely on awareness, protection, and integration. This course is a subset of Raven’s EWIS Target Groups 1 and 2 Course which covers all AMC20-22 modules.
A structural mechanic will learn why stepping on a wire bundle to reach a hydraulic pump creates latent failures. A CAMO planner will learn why staggering zonal inspections is critical to catching degradation before an arc tracking event occurs. We strip away the heavy electrical theory and focus on the pragmatic realities of the hangar floor and the planning office.
Whether you need your initial certification or your mandatory two-year continuation course, this training bridges the gap between maintenance planning and practical, protective execution, ensuring collateral damage to wiring systems is eliminated.
Target Audience
EASA AMC 20-22 requires specific training for personnel who work around, but do not directly maintain, the aircraft’s electrical wiring. This course precisely satisfies the regulatory requirements for EWIS Target Groups 4 and 5:
- Target Group 4 (Qualified staff performing general maintenance): B1, B3, and Category A mechanics, as well as structural and powerplant technicians. These professionals perform heavy physical work in close proximity to EWIS and must understand how to protect it from mechanical damage and contamination.
- Target Group 5 (Qualified staff performing other engineering or planning work): Maintenance planners, technical records staff, and non-avionic engineers who schedule tasks and need to understand the critical nature of EWIS inspections and zonal access constraints.
Key Learning Objectives
Upon successful completion of this high-fidelity course, learners will achieve the following outcomes, aligned with EASA regulations:
Knowledge
- Regulatory Framework: Understand why EASA AMC 20-22 mandates EWIS training for non-electrical personnel and how wiring is classified as a primary structural element.
- Zonal Safety Principles: Comprehend how general aircraft systems (hydraulic, fuel, environmental) interact with EWIS and the severe risks of cross-contamination.
- Degradation Factors: Identify how vibration, metallic shavings (swarf), and chemical solvents (like Skydrol) rapidly degrade wiring insulation over time.
Skills
- Proximity Protection: Apply practical techniques to protect adjacent wiring bundles during heavy structural, powerplant, or hydraulic maintenance tasks.
- Contamination Control: Execute rigorous Clean-As-You-Go procedures to ensure foreign object debris (FOD) and corrosive fluids do not compromise electrical installations.
- Visual Awareness: Recognize obvious signs of EWIS damage, such as broken clamps, severe chafing, or fluid ingress, to accurately report defects to Part-145 avionic staff.
Competence
- Safe Maintenance Execution: Confidently perform general aircraft tasks without causing collateral damage to the surrounding electrical infrastructure.
- Effective Planning (Group 5 Focus): Integrate critical EWIS inspection requirements into maintenance planning documents, ensuring adequate physical access and logical task sequencing.
Course Content
