NCAA CPL Aircraft General Knowledge study materials
NCAA CPL Aircraft General Knowledge study resources

NCAA CPL Aircraft General Knowledge study plan

NCAA CPL Aircraft General Knowledge · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Aircraft General Knowledge

  • Map the full Aircraft General Knowledge syllabus into airframe, systems, powerplant, and electrical sub-areas, and rank each by question weight

  • Define and correctly distinguish structural terms: fuselage, wing spar, rib, stringer, bulkhead, longeron, and stressed skin

  • Explain load paths through a semi-monocoque structure and identify tension, compression, shear, bending, and torsion in a loaded wing

  • List the four forces and describe how wing loading changes with gross weight and load factor

Your checkpoint

A one-page annotated airframe diagram labeling at least 20 structural components with a one-line function for each

Week 2

Aircraft General Knowledge

  • Describe the construction and failure characteristics of the principal wing and fuselage structural types

  • Explain the purpose and operation of primary and secondary flight controls, including trim and high-lift devices

  • Identify hydraulic and pneumatic system components and trace a typical actuation circuit from reservoir to actuator

  • Interpret the meaning of system redundancy, fail-safe design, and damage tolerance in transport aircraft

Your checkpoint

A hand-drawn schematic of a hydraulic actuation circuit with every component labeled and flow direction arrowed

Week 3

Aircraft General Knowledge

  • Explain the operating principle of a reciprocating engine through all four strokes and the role of each major component

  • Compare carburetor and fuel injection systems, including icing susceptibility and mixture control

  • Describe the ignition system from magneto to spark plug and explain dual-magneto redundancy

  • State the function of the constant-speed propeller, governor, and feathering mechanism

Your checkpoint

A written 300-word explanation of a complete four-stroke cycle naming every component and its function at each stroke

Week 4

Aircraft General Knowledge

  • Describe the gas turbine cycle and distinguish turbojet, turboprop, and turbofan configurations by airflow and thrust production

  • Explain the function of compressor, combustion chamber, turbine, and accessory gearbox in a turbine engine

  • Identify engine indication parameters and state what each gauge measures and its normal trend

  • Explain how thrust reversers and afterburners change thrust output

Your checkpoint

A comparison table of turbojet, turboprop, and turbofan covering airflow path, thrust source, efficiency range, and typical application

Week 5

Aircraft General Knowledge

  • Explain AC and DC generation, including alternator, generator, rectifier, and inverter roles

  • Trace a typical electrical distribution path from bus bar to load and state the purpose of circuit protection

  • Describe the function of the battery, external power receptacle, and static inverter in normal and emergency operation

  • Interpret the aircraft electrical symbols used in a standard schematic

Your checkpoint

A labeled electrical distribution schematic from generator through buses to at least six loads, with protection devices shown

Week 6

Aircraft General Knowledge

  • Explain the operation of pitot-static and gyroscopic instruments and their failure indications

  • Describe the fuel system from tank through selector, pump, filter, and metering unit, including venting

  • Explain pressurization and air-conditioning sources and the meaning of cabin differential pressure

  • Identify fire detection and extinguishing system components for engine and cabin zones

Your checkpoint

A 15-item identification quiz you write yourself, covering instruments, fuel, pressurization, and fire systems, with an answer key

Week 7

Aircraft General Knowledge

  • Explain landing gear configuration, shock absorption, retraction, and braking systems including anti-skid

  • Describe ice and rain protection methods for airframe, propeller, and pitot systems

  • Interpret weight and balance terms: empty weight, maximum takeoff weight, center of gravity, and moment

  • Solve at least five center-of-gravity problems using the moment method and verify results against limits

Your checkpoint

A worked set of five weight-and-balance calculations with center of gravity plotted against a forward and aft limit

Week 8

Aircraft General Knowledge

  • Consolidate all sub-areas into a single revision sheet linking each system to its components and failure modes

  • Complete timed practice sets and record accuracy per sub-area to target remaining weak points

  • Re-explain the three lowest-scoring sub-areas from memory without notes

  • Review all previously missed items and confirm each is now answered correctly with reasoning

Your checkpoint

A timed 60-question mock scored by sub-area, with a written remediation note for every missed item

Milestones

Week 2: Can label a blank airframe diagram with 20 components and explain load paths without notes

Week 4: Can describe reciprocating and turbine engine cycles end to end and pass a self-written 20-question engine quiz at 80 percent or better

Week 6: Can trace electrical, fuel, and instrument systems on a blank schematic and score 80 percent or better on the self-written identification quiz

Week 8: Scores 80 percent or better on the timed 60-question mock, with no single sub-area below 70 percent