NCATT AET study materials
NCATT AET study resources

NCATT AET study plan

NCATT AET · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Aircraft Fundamentals

  • Sketch and label the primary structural components of a fixed-wing airframe (fuselage, wing, empennage, landing gear) from memory.

  • Differentiate between the four forces of flight and explain how control surfaces (aileron, elevator, rudder, flap) modify them.

  • Identify the major aircraft systems (hydraulic, pneumatic, fuel, electrical, pitot-static) and state the function of each in one sentence.

  • Define standard aviation terminology and abbreviations encountered in maintenance documentation.

Your checkpoint

A hand-drawn or digital airframe/systems diagram with 25+ correctly labeled components, self-graded to 100% accuracy.

Week 2

Basic Electricity and Electronics

  • Apply Ohm's law and the power law to solve 20 numeric circuit problems without a reference sheet.

  • Compute series, parallel, and series-parallel equivalent resistance for mixed circuits.

  • Explain the behavior of inductors and capacitors in DC and AC circuits, including reactance and phase relationships.

  • Differentiate AC and DC generation, rectification, and transformer action in aircraft power systems.

  • Identify schematic symbols for resistors, capacitors, inductors, diodes, transistors, and switches.

Your checkpoint

A worked problem set of 30 circuit calculations with a verified answer key and a one-page symbol reference sheet.

Week 3

Digital Techniques and Aircraft Computers

  • Convert between binary, octal, decimal, and hexadecimal values and perform binary addition/subtraction.

  • Explain the function of logic gates (AND, OR, NOT, NAND, NOR, XOR) and complete truth tables for each.

  • Describe how a microprocessor-based aircraft computer executes instructions (bus, memory, I/O, clock).

  • Differentiate digital data buses used in aircraft (ARINC 429, ARINC 629, MIL-STD-1553, Ethernet) by topology and data rate.

  • Explain the purpose of built-in test equipment (BITE) and how fault codes are generated and retrieved.

Your checkpoint

A two-page digital-techniques reference card covering number conversions, gate truth tables, and bus comparisons, plus a 15-question self-quiz scored at 80% or higher.

Week 4

Wiring, Connectors, and Terminations

  • Identify wire types, gauge sizes, and insulation ratings used in aircraft and select the correct replacement for a given application.

  • Demonstrate the steps for a properly crimped terminal and a soldered splice, listing the inspection criteria for each.

  • Differentiate connector families (circular, rectangular, rack-and-panel) and describe contact insertion/removal tooling.

  • Explain shielding, grounding, bonding, and drip-loop practices and why each matters for EMI and moisture control.

  • Read and interpret a wiring diagram and a wire identification code to trace a circuit end to end.

Your checkpoint

A trace of one complete circuit from a provided (self-authored) wiring description, with every wire labeled by gauge, color code, and termination type.

Week 5

Test Equipment, Measurement, and Troubleshooting

  • Select the correct meter (DMM, megohmmeter, oscilloscope, bond tester) for a stated measurement task and justify the choice.

  • Measure voltage, current, resistance, and continuity on a practice circuit and interpret the readings against expected values.

  • Apply a systematic six-step troubleshooting method to isolate a fault in a described circuit.

  • Explain safety precautions for live-circuit measurement, high voltage, and electrostatic discharge.

Your checkpoint

A written troubleshooting log for three described fault scenarios, each with a fault-isolation path and a final diagnosis matching the answer key.

Week 6

Avionics and Aircraft Systems Installation

  • Describe the installation requirements (power, grounding, bonding, cooling, clearance) for a typical avionics line-replaceable unit.

  • Explain the purpose and routing constraints of coaxial cable, waveguide, and antenna feedlines.

  • Identify the documentation used to support an installation: wire lists, system schematics, STC/installation instructions, and weight-and-balance records.

  • Explain how an installation affects aircraft weight and balance and electromagnetic compatibility.

Your checkpoint

A one-page installation checklist for a hypothetical radio installation covering power, bonding, cooling, routing, and documentation sign-off.

Week 7

Basic Electricity and Electronics & Test Equipment, Measurement, and Troubleshooting

  • Re-solve every missed question from weeks 2 and 5 and write a one-sentence explanation of the correct concept for each.

  • Combine electrical theory with measurement practice by diagnosing three circuits that mix power, ground, and connector faults.

  • Recite key formulas and unit conversions from memory under a 10-minute timed drill.

Your checkpoint

An error log covering at least 20 previously missed items, each closed out with a corrected explanation and a re-test score of 90% or higher.

Week 8

Aircraft Fundamentals & Digital Techniques and Aircraft Computers & Wiring, Connectors, and Terminations & Avionics and Aircraft Systems Installation

  • Complete two full-length timed practice exams and record a per-domain score breakdown.

  • Rebuild the week 1 airframe/system diagram from blank paper in under 15 minutes.

  • Re-derive the digital and wiring reference cards without notes to confirm retention.

  • Rank all six domains by score and schedule targeted review for the two weakest.

Your checkpoint

A final readiness report showing per-domain practice scores, a ranked weak-area list, and a written remediation plan for the two lowest domains.

Milestones

Week 2: Score 80% or higher on a 25-question mixed quiz covering Aircraft Fundamentals and Basic Electricity/Electronics.

Week 4: Complete all four 17%-weight domains (1-4) at least once, with a combined practice score of 80% or higher and no domain below 70%.

Week 6: All six domains covered; per-domain practice scores logged with nothing below 70%.

Week 8: Two full-length timed practice exams completed with an overall score of 85% or higher and no single domain below 80%.