PNG CASA Basic Gas Turbine

It is a written examination administered by PNG CASA, combining multiple-choice items with short written answers. Expect questions that ask you to explain a system or interpret a reading, not just recall a definition. PNG CASA publishes the current paper structure and any permitted reference material; check its site before you sit.

PNG CASA sets the duration, sitting fee and pass mark, and these change from time to time, so no figure is quoted here. The current schedule, fees and pass standard are published by the authority. Confirm them with PNG CASA directly when you book, and allow extra time for the written-answer section.

Most candidates find the fundamentals and systems questions manageable and struggle with the applied ones: interpreting start trends, explaining why a limitation exists, and diagnosing a fault from symptoms. The paper rewards understanding of how sections interact. If you can explain compressor surge or a hot start in your own words, you are on track.

Retake rules, waiting periods and any limit on attempts are set by PNG CASA, not by the training provider. The authority publishes its current policy on re-sitting. Ask about it before your first attempt so you know how a failure affects your timeline, and use any waiting period to revisit weak domains.

Start with thermodynamics and engine fundamentals, then construction and materials, then fuel, oil and ignition. Move to starting, instrumentation and performance limitations, and finish with maintenance documentation, fault diagnosis and human factors. Later topics assume the earlier ones, so reversing the order makes fault questions much harder than they need to be.

Weak grasp of the Brayton cycle and why parameters change with altitude and temperature; confusing compressor stall with surge; vague answers on documentation and airworthiness release; and poor structure in written answers. Candidates who only memorise lists tend to lose marks on the applied questions that ask for reasoning.

The examination tests knowledge, but the questions assume familiarity with real engines. Time spent watching start sequences, reading handling manuals and looking at trend data makes instrumentation and fault questions far easier. Check with PNG CASA what practical experience or logbook evidence your licence application will require separately.

Write answers to past-style questions under time pressure, then mark them against a textbook. Revisit any domain where you cannot explain the reasoning aloud. Practise interpreting start parameters and describing a troubleshooting sequence step by step. Confirm the current syllabus on the PNG CASA website so you are not revising outdated content.

No. It is a PNG CASA licence examination with its own syllabus and regulatory content, including PNG airworthiness and maintenance requirements. Study material from other authorities is useful for technical fundamentals, but do not assume their regulatory or documentation questions transfer. Always work to the current PNG CASA syllabus.