NCAA CPL Aircraft General Knowledge study guide
NCAA CPL Aircraft General Knowledge · Work through your exam, one topic at a time.
The NCAA Commercial Pilot Licence (CPL) Aircraft General Knowledge knowledge test is one of the theoretical examinations required by the Nigeria Civil Aviation Authority for the issue of a Commercial Pilot Licence. It is intended for student pilots who have completed the required ground training and are ready to demonstrate the aeronautical knowledge needed to operate as a commercial pilot. The exam covers the Aircraft General Knowledge syllabus, which includes airframe and systems, powerplants, electrical and hydraulic systems, flight instruments, and associated limitations and emergency procedures. The test is delivered in multiple-choice format at NCAA Headquarters in Abuja or the Regional Offices in Lagos, Kaduna and Enugu. The passing grade is 75%, and results are valid for 24 calendar months from the date of issuance. Preparation should follow the syllabus published in Advisory Circular NCAA-AC-PEL 018, available on the NCAA website. Topics on this exam: Aircraft General Knowledge. The NCAA CPL Aircraft General Knowledge study guide has 1 section and about 437 words.
01Aircraft General Knowledge - Structures, Systems, Powerplant and Instrument Logic
The NCAA CPL Aircraft General Knowledge paper tests whether you can explain how structure, systems and powerplant interact - and predict what the instruments and warnings show when a component fails. Expect system-reasoning items rather than pure definitions. Semi-monocoque construction: the skin carries most of the load, stiffened by stringers and frames. Fail-safe design provides alternate load paths and crack stoppers, while safe-life items (landing gear, some rotating parts) are retired at a fixed life.
437 words, about 2 minMore study resources for NCAA CPL Aircraft General Knowledge
- Practice questionsIn a four-stroke reciprocating engine, during which stroke is the intake valve normally open and the piston moving toward bottom dead centre?
- FlashcardsFour-stroke cycle. Sequence of intake, compression, power, and exhaust strokes in a reciprocating engine.
- Cheat sheetFour-stroke cycle order: intake, compression, power (combustion), exhaust; the crankshaft completes two revolutions per cycle, so a four-cylinder four-stroke engine produces two power strokes per revolution.
- Key termsAngle of Attack. The angle between the wing chord line and the relative airflow.
- Study planMap the full Aircraft General Knowledge syllabus into airframe, systems, powerplant, and electrical sub-areas, and rank each by question weight.
- Common mistakesThe ASI is a differential-pressure instrument calibrated to a standard density; candidates memorise 'TAS is higher than IAS at altitude' without understanding that the calibration assumes sea-level density, so they invert the correction when a question asks what happens on a hot day at a high-elevation airport.
- Exam-day guideBring the original document, not a photocopy or photo on your phone.