CPL Aerodynamics

It tests applied understanding rather than recall. Expect questions that ask you to predict what happens to lift, drag, trim or control force when a parameter such as weight, altitude, speed or centre of gravity position changes, and to explain the mechanism behind the change. Numerical items based on standard lift, drag and performance relationships are common.

Start with principles of flight, because performance, stability and stall behaviour all depend on lift, drag and thrust relationships. Move next to performance, where those relationships become charts and calculations. Then study stability and control, and finish with stall, spin and high-speed aerodynamics, which combine everything learned earlier.

Candidates most often lose marks on load factor and accelerated stall, on the relationship between thrust, power and speed in climb and cruise, on static versus dynamic stability distinctions, and on high-speed effects such as critical Mach number and shock-induced separation. These are the areas where rote learning collapses and genuine understanding is required.

You need to understand the relationships well enough to reason with them, and to handle simple proportional calculations without a reference sheet. Most items reward knowing how one variable affects another rather than plugging numbers into a long equation. Practise rearranging the lift formula and the load factor relationship until they are second nature.

Allow enough time to work through each domain systematically and then complete several full-length practice sets under timed conditions. Candidates who study only by reading notes tend to underperform compared with those who answer written questions and review every error. Spread the work over weeks rather than days so the material consolidates.

Retake rules, waiting periods and any fees are set by the regulator and can change, so confirm the current position with CASA before booking. Treat a failed attempt as diagnostic: identify which domain produced the lost marks, rebuild that area from first principles, and only then return to timed practice.

Question format, item count and duration are determined by the examining authority and are not fixed by this study page. Check the current examination details with CASA when you book. Regardless of format, practise expressing your reasoning in a single clear sentence, because that discipline exposes gaps that recognition alone hides.

This page is independent study material built around the four commonly examined domains. It is not an official publication and carries no endorsement. Use it to build and test understanding, then cross-check every figure, limit and procedure against current CASA publications and your flying training organisation's approved texts.