CASA IREX

It tests the knowledge needed to operate under the instrument flight rules. CASA's published syllabus splits into four equally weighted areas: IFR rules and procedures, instrument meteorology, navigation and radio navigation aids, and flight planning, performance and loading. Expect applied questions - reading forecasts, planning approaches, computing performance - rather than pure definitions.

Most candidates find it more demanding than the private pilot written because it assumes solid foundations and adds weather decision-making, approach procedure interpretation and performance calculations. Difficulty is mostly about breadth: four equally weighted areas means you cannot carry a weak topic with strength elsewhere. Structured study over several weeks beats cramming.

Start with IFR rules and procedures so the regulatory framework makes sense, then meteorology, because forecast interpretation underpins every flight-planning decision. Move to navigation aids once you understand the airspace structure, and finish with flight planning and performance, which draws on all three. Practise mixed question sets at the end to simulate the real exam.

Candidates most often lose marks on weather interpretation - misreading forecasts and trend information - and on performance calculations where a unit or an assumption is wrong. Others underestimate radio navigation aids, assuming GPS knowledge covers everything. Weakness in one of four equally weighted areas is enough to pull the overall result below a pass.

We could not verify the current duration, question count, pass mark or fee from CASA's published pages at the time of writing, so we have not stated figures. Confirm these directly with CASA or your flight training organisation before booking, as exam formats are revised periodically and older figures circulating in study groups may be out of date.

CASA sets the retake rules, and we could not confirm the current policy from the source material, so check directly with CASA. In practice, most candidates who fail do so on one specific area; review your result, rebuild that area, and avoid rebooking immediately without further study, since a second attempt with the same gaps usually repeats the outcome.

The current Aeronautical Information Publication, the Civil Aviation Safety Regulations and the applicable manuals of standards, current en route and terminal charts, and the CASA instrument rating syllabus. Practise with real forecasts and actual approach plates rather than simplified textbook examples - the exam questions are written against current operational documents.

No. This is an independent study platform and is not affiliated with, endorsed by, or operated by CASA. We have not reproduced any official question bank. Use this material alongside the official syllabus and your instructor's guidance, and verify all administrative details - fees, booking, format and validity - with CASA before you rely on them.