NCAA CPL Aircraft General Knowledge
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ExploreAbout this exam
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. Candidates should study the relevant sections of the Nigeria Civil Aviation Regulations (Nig. CARs) and aircraft technical manuals, and work through practice questions that test understanding of systems rather than rote recall. A structured study plan covering each system, combined with review of deficiencies after any failed attempt, is the most reliable route to a pass. This page is an independent study resource and is not affiliated with or endorsed by the NCAA.
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About NCAA CPL Aircraft General Knowledge preparation
What is the format of the NCAA CPL Aircraft General Knowledge exam?
The exam is multiple choice. The number of questions and the time allowed are not stated in the NCAA source material, so candidates should confirm these details with the NCAA or their training organisation when applying. The passing grade is 75%, and the test is taken at NCAA Headquarters in Abuja or the Regional Offices in Lagos, Kaduna and Enugu.
How difficult is the Aircraft General Knowledge test?
Difficulty depends on your ground-school preparation. The syllabus covers aircraft systems, powerplants, instruments and related limitations, so questions often require applying knowledge to practical scenarios rather than simple recall. A pass mark of 75% means you need a solid understanding across all topics, not just a few favourite areas.
What happens if I fail the test?
Applicants who fail a knowledge test can apply to retake it after presenting evidence of having received additional instructions from an Authorised Instructor in the areas of deficiencies. This means you must address your weak areas with an instructor before you can sit the test again, so review your result carefully and plan remedial training.
How long are my knowledge test results valid?
Knowledge test results are valid for 24 calendar months from the date of issuance of the result. You must complete the remaining requirements for licence issue within that period, or the test may need to be retaken. Keep track of the expiry date and plan your flight training and checkrides accordingly.
Where can I find the official syllabus for the exam?
The syllabi and requirements for all knowledge tests can be found in Advisory Circular NCAA-AC-PEL 018, located under Personnel Licensing Advisory Circulars on the Authority website at www.ncaa.gov.ng/documents. Use this document as your primary study guide, because it defines exactly what the NCAA expects you to know.
Where can I take the NCAA knowledge test?
Applications to take NCAA knowledge tests can be submitted at the Authority's Headquarters in Abuja and the Regional Offices located in Lagos, Kaduna and Enugu. Contact the office most convenient for you to confirm available test dates and any application requirements before travelling.
In what order should I study for the Aircraft General Knowledge exam?
Start with airframe and systems, then move to powerplants, electrical and hydraulic systems, and flight instruments. Finish with limitations and emergency procedures, because these integrate knowledge from all systems. Use the NCAA-AC-PEL 018 syllabus as a checklist, and attempt practice questions after each topic to identify gaps early.
What are common reasons candidates fail this test?
Common failure modes include superficial memorisation without understanding how systems interact, neglecting less familiar topics such as electrical or hydraulic systems, and misreading questions under time pressure. Another frequent issue is not reviewing the syllabus to ensure full coverage. Focus on understanding principles and practising application-style questions.