Aircraft Electrical Systems Technician Course

Lesson 1 • Magnetism and Electromagnetic Principles

Covers magnetic fields, electromagnetic induction, and their role in aircraft generators and motors. Links electromagnetic theory to practical aircraft components.

Lesson 2 • Series, Parallel, and Series-Parallel Circuits

Analyses circuit configurations used throughout aircraft electrical systems. Learners solve voltage, current, and resistance in each configuration type.

Lesson 3 • Atomic Structure and Electron Flow

Covers atomic theory, free electrons, and conductivity as the basis of electrical current. Establishes the physical foundation for all subsequent circuit analysis.

Lesson 4 • Voltage, Current, and Resistance

Defines voltage, current, and resistance with aircraft-specific examples. Connects these quantities to measurable parameters in real aircraft wiring.

Lesson 1 • Power Distribution and Bus Systems

Analyses bus bars, tie relays, and load shedding logic used in aircraft power distribution. Learners trace power paths under normal and abnormal conditions.

Lesson 2 • Aircraft Batteries and Ground Power

Covers battery types, capacity ratings, charging methods, and external ground power connections. Learners assess battery health and ground power compatibility.

Lesson 3 • Aircraft Electrical System Overview

Introduces the overall architecture of aircraft electrical systems including generation, distribution, and utilisation. Provides context for all subsequent system-level study.

Lesson 4 • AC Power Generation and Frequency Control

Examines AC generators, constant-speed drives, and integrated drive generators. Connects AC generation to frequency-sensitive aircraft loads.

Lesson 1 • Splicing, Repair, and Modification

Covers approved methods for splicing and repairing aircraft wiring without compromising airworthiness. Learners execute repairs using environmental splices and approved materials.

Lesson 2 • Wire Routing, Bundling, and Support

Establishes rules for routing wire bundles away from heat, fluid, and mechanical hazards. Learners apply clamping, lacing, and separation standards to aircraft installations.

Lesson 3 • Aircraft Wire Types and Specifications

Identifies wire insulation materials, conductor gauges, and temperature ratings used in aircraft. Connects wire selection to load, environment, and regulatory requirements.

Lesson 4 • Wiring Inspection and Acceptance Criteria

Defines visual and dimensional acceptance criteria for completed wiring installations. Learners conduct systematic inspections and record discrepancies correctly.

Lesson 1 • Relays, Contactors, and Solenoids

Analyses electromagnetic relays, high-current contactors, and solenoid actuators in aircraft circuits. Learners test coil resistance, contact continuity, and pull-in voltage.

Lesson 2 • Circuit Breakers and Fuses

Examines thermal, magnetic, and current-limiting circuit breakers alongside fuse types. Learners match protection devices to circuit requirements and replace them safely.

Lesson 3 • Switches and Switch Types

Covers toggle, rocker, rotary, and proximity switches used in aircraft control panels. Learners identify switch configurations and verify correct operation.

Lesson 4 • Diodes and Solid-State Protection

Introduces diodes, transient suppressors, and solid-state relays used for circuit protection. Connects semiconductor devices to arc suppression and reverse-polarity protection.

Lesson 1 • Bonding and Resistance Measurement Tools

Examines low-resistance ohmmeters and bonding testers used to verify aircraft bonding paths. Learners measure and record bonding resistance against airworthiness limits.

Lesson 2 • Digital Multimeter Operation

Covers multimeter functions, range selection, and probe techniques for aircraft circuit measurement. Learners measure voltage, current, resistance, and continuity accurately.

Lesson 3 • Test Equipment Calibration and Care

Establishes calibration intervals, storage requirements, and handling procedures for test instruments. Learners verify calibration status and remove out-of-tolerance equipment from service.

Lesson 4 • Insulation Resistance and Hi-Pot Testing

Covers megohmmeter operation and high-potential testing to verify wiring insulation integrity. Learners apply correct test voltages and interpret pass/fail criteria.

Lesson 1 • Interior and Cabin Lighting

Covers cockpit flood, instrument, and passenger cabin lighting including dimming control. Learners adjust dimmer circuits and replace interior lighting components.

Lesson 2 • Exterior Lighting Systems

Examines navigation, anti-collision, landing, and taxi lighting systems and their regulatory requirements. Learners trace exterior lighting circuits and verify correct operation.

Lesson 3 • Emergency and Escape Lighting

Analyses self-contained emergency lighting units, escape path marking, and battery backup systems. Learners test emergency lighting activation and battery condition.

Lesson 4 • Lighting System Troubleshooting

Applies systematic fault isolation to lighting circuit failures including open, short, and ground faults. Learners use wiring diagrams to locate and correct lighting discrepancies.

Lesson 1 • Load Circuit and Component Fault Isolation

Applies fault isolation to individual load circuits including motors, heaters, and avionics feeders. Learners distinguish component failure from wiring faults using in-situ testing.

Lesson 2 • Troubleshooting Methodology and Logic

Introduces systematic fault isolation using half-split, cause-and-effect, and symptom-based methods. Provides a repeatable diagnostic framework applicable to all aircraft electrical systems.

Lesson 3 • Generation System Fault Isolation

Covers fault isolation in DC and AC generation systems including voltage regulation failures. Learners diagnose under-voltage, over-voltage, and generator trip faults.

Lesson 4 • Distribution and Bus Fault Isolation

Analyses faults in bus bars, contactors, and feeder cables that interrupt power distribution. Learners restore power paths and identify root causes of bus failures.

Lesson 1 • Approved Data and Technical Publications

Examines aircraft maintenance manuals, wiring diagram manuals, and service bulletins as approved data sources. Learners locate and apply correct revision-controlled data for electrical tasks.

Lesson 2 • Quality Assurance and Independent Inspection

Covers required inspection items, independent inspection procedures, and quality escape prevention. Learners identify tasks requiring dual-sign-off and complete inspection records.

Lesson 3 • Electrical Safety and Hazard Management

Establishes electrical safety rules, lockout/tagout procedures, and arc flash precautions for aircraft maintenance. Learners apply hazard controls before performing live electrical work.

Lesson 4 • Regulatory Framework for Electrical Maintenance

Covers the structure of aviation maintenance regulations, approved data requirements, and technician certification obligations. Learners identify applicable regulatory sources for electrical work.