CAAS PPL Aircraft General Knowledge Practice Questions

Aircraft General Knowledge, almost always abbreviated to AGK, is the subject that explains what makes a light aeroplane work and what to do when part of it stops working as intended. A solid grasp of AGK turns abstract checklist items into decisions you understand, and it is heavily represented in the CAAS PPL theory examination. The questions in this quiz mirror the exam style so you can practise applying the underlying systems knowledge rather than reciting it. The powerplant is the heart of the subject. You should be able to walk through the four strokes of a piston engine — induction, compression, power and exhaust — and explain how the carburettor or fuel-injection system meters fuel and air.

Understand why mixture must be leaned as you climb, how dual magnetos provide ignition independent of the electrical system, and the conditions under which carburettor icing forms even on a warm day. Engine instruments, the role of oil, and the meaning of cylinder-head and exhaust-gas temperatures all follow naturally from this foundation. Beyond the engine, AGK covers the airframe and its loads, flight controls and trim, the landing gear and braking, and the fuel system. A second major theme is instruments. The pitot-static system feeds the airspeed indicator, altimeter and vertical-speed indicator, so you must know what each instrument reads, how a blockage affects it, and the difference between indicated, calibrated and true values.

The gyroscopic instruments — attitude indicator, heading indicator and turn coordinator — rely on rigidity and precession, and you should know their typical errors and power sources. The electrical system, including the battery, alternator, bus bars and circuit protection, ties the panel together, and a basic understanding of vacuum systems explains the alternative source of power for some gyros. Finally, airworthiness, maintenance intervals and the documents that prove an aircraft is fit to fly link AGK back to Air Law. Use this quiz to find the gaps in your systems knowledge, then return to the study guide to fill them. For any airframe-specific limits, always defer to the aeroplane flight manual and the current CAAS PPL requirements.