N2
Definition
The rotational speed of the high-pressure compressor in a turbofan engine, expressed as a percentage. N2 indicates core engine speed and is used to monitor engine health and starting.
Why N2 Matters for Pilots
Understanding N2 is important for pilot certification exams and safe flight operations. This concept appears on FAA and EASA knowledge tests, and examiners may ask about it during oral checkrides. A thorough understanding of N2 helps you make better decisions in the cockpit.
Exam Tip
This concept is commonly tested in engines-related questions on FAA and EASA exams. Make sure you can explain N2 in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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Test your knowledge
Think you understand N2? Challenge yourself with practice questions covering engines and all other exam subjects.
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