Flap
Definition
A hinged surface on the trailing edge of the wing that increases both lift and drag when extended. Flaps allow slower approach speeds and steeper descent angles while maintaining a manageable pitch attitude.
Why Flap Matters for Pilots
Understanding Flap is critical for passing the FAA Private Pilot Knowledge Test and performing safely in flight. Aerodynamics questions make up a significant portion of both written exams and oral checkrides. Pilots who grasp concepts like Flap can make better decisions during all phases of flight, from takeoff to landing.
Exam Tip
This concept is commonly tested in aerodynamics-related questions on FAA and EASA exams. Make sure you can explain Flap in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
Related Terms
Share this with a fellow pilot
Related Content
Cat Ii Approach
Aviation glossary definition and exam tips.
Preflight Inspection
Aviation glossary definition and exam tips.
Hung Start
Aviation glossary definition and exam tips.
ATPL Theory Complete Guide
Master every subject covered in airline pilot exams.
Free Practice Exam
Test your aviation knowledge with real exam questions.
Built by a commercial pilot
Pass your written for $39 — every track, 60 days
Flap is one of 5,500+ exam topics in the All-5 Bundle: PPL / IR / CPL / ATPL / Part 107 / TAE. One-time payment, no subscription. Free 30-day extension if you fail your real exam.
Test your knowledge
Think you understand Flap? Challenge yourself with practice questions covering aerodynamics and all other exam subjects.
Try Free Practice QuestionsMore Aerodynamics Terms
Angle of Attack(AoA)
The angle between the chord line of an airfoil and the relative wind. As AoA inc...
Lift
The aerodynamic force perpendicular to the relative wind generated by an airfoil...
Drag
The aerodynamic force opposing the motion of an aircraft through the air. Drag h...
Parasite Drag
Drag not associated with lift production, including form drag from the aircraft ...
Would you pass the real exam right now?
Take a free practice quiz — real FAA-style questions, instant score. No signup to start.
Take the free quiz →