CPL Aircraft General Knowledge study plan
CPL Aircraft General Knowledge · Give each week a clear focus.
8 weeks · About 6 hours per week
Aircraft general knowledge (airframe, systems and powerplants) & Airframe structures and flight controls
Map the airframe into its primary structural groups (fuselage, wing, empennage, landing gear) and label the load paths carried by each
Explain how semi-monocoque construction distributes stress between skin, stringers, frames and bulkheads, and why that matters for damage tolerance
Identify the three primary flight control axes and match each to its control surface, hinge line and actuation type
Sketch a labelled diagram of a typical wing spar, rib and skin attachment from memory and check it against your notes
Your checkpoint
A one-page hand-drawn airframe and flight-control schematic with every structural member and control surface named and correctly placed
Aircraft general knowledge (airframe, systems and powerplants) & Airframe structures and flight controls
Distinguish primary, secondary and auxiliary flight controls and give one failure consequence for each
Describe the difference between cable-and-pulley, push-pull rod and fly-by-wire control runs, including the failure modes of each
Explain mass balance, flutter and aileron reversal and how aircraft designers prevent each
Summarise how high-lift devices (flaps, slats, spoilers) alter lift and drag through each phase of flight
Your checkpoint
A written comparison table of three control-actuation systems with at least two failure modes and one prevention measure per system
Aircraft systems (electrical, hydraulic, pneumatic, fuel, ice and rain protection)
Trace the DC electrical system from battery and alternator/generator through bus bars, relays and circuit breakers to a named consumer
Explain the purpose and operation of a voltage regulator, overvoltage protection and the master switch
Describe how the hydraulic system generates, stores and distributes pressure, including accumulators, relief valves and selectors
Outline the pneumatic system: sources of bleed air, its uses and the pressure regulation and safety components involved
Your checkpoint
A labelled system diagram of the electrical and hydraulic circuits showing at least eight components and the function of each
Aircraft systems (electrical, hydraulic, pneumatic, fuel, ice and rain protection) & Piston and turbine powerplants, propellers
Describe fuel system layout, tank types, venting, fuel selection and how water and contamination are managed
Explain the operation of carburettor icing protection and airframe ice and rain protection systems
Compare a horizontally opposed piston engine with a turbine engine on the basis of induction, compression, ignition and exhaust
Explain how a propeller converts engine power into thrust and define pitch, blade angle and constant-speed operation
Your checkpoint
A 400-word comparative write-up of piston versus turbine powerplant cycles, including one operational limitation of each
Piston and turbine powerplants, propellers
Describe the four-stroke cycle and identify the function of each major piston engine component
Explain the ignition, lubrication and cooling systems of a piston engine and the consequence of each failing
Describe the turbine engine sections (intake, compressor, combustion, turbine, exhaust) and the gas flow through them
Explain propeller forces, feathering, and the effect of density altitude on propeller and engine performance
Your checkpoint
A labelled cutaway sketch of both a piston engine and a turbine engine with every section annotated and a short note on the function of each
Instruments, warning systems and aircraft performance limitations
Explain the operating principle of the pitot-static instruments and the errors affecting each
Describe the gyroscopic instruments and their power sources, plus the failure indications when a source is lost
Identify the main engine and airframe warning systems and interpret a given set of warning indications
Explain how mass, balance and density altitude limit aircraft performance and calculate a simple take-off and landing performance figure from given data
Your checkpoint
A worked performance calculation (mass and balance plus take-off distance) with all assumptions and limiting values stated
Aircraft general knowledge (airframe, systems and powerplants) & Aircraft systems (electrical, hydraulic, pneumatic, fuel, ice and rain protection) & Piston and turbine powerplants, propellers
Revisit the weakest two domains from earlier weeks and close every gap listed in your error log
Explain how airframe, system and powerplant knowledge combine in one normal flight profile from pre-start to shutdown
Describe the correct response to three specified system malfunctions using your own notes only
Answer 40 mixed practice questions and record the domain of every incorrect answer
Your checkpoint
An error log of at least 20 previously missed facts, each rewritten as a correct one-line statement and re-tested
Aircraft general knowledge (airframe, systems and powerplants) & Airframe structures and flight controls & Aircraft systems (electrical, hydraulic, pneumatic, fuel, ice and rain protection) & Piston and turbine powerplants, propellers & Instruments, warning systems and aircraft performance limitations
Complete two full-length timed practice papers and record the score per domain
Rank your five domains by accuracy and revise the lowest-ranked one first
Recite the key limitations, speeds and system figures from memory without notes
Confirm every remaining uncertainty is resolved or flagged as needing review
Your checkpoint
A final scorecard showing per-domain accuracy on two timed papers, with a one-sentence revision action for any domain below 80 percent
Milestones
Week 2: Can draw and explain the airframe structure and all primary and secondary flight controls without notes
Week 4: Can trace the electrical and hydraulic circuits end to end and explain piston versus turbine operation in your own words
Week 6: Can explain every instrument's operating principle and complete a mass-and-balance and performance calculation unaided
Week 8: Score at least 80 percent on each of the five domains in two timed practice papers