Pass your FAA knowledge test, a few minutes a day.
3,829 original practice questions for the Private Pilot – Airplane test, each with its explanation and the FAA source behind it. StudyWren tells you honestly how close you are to passing.
A new question every day, chosen from our free sample. Pick an answer, then check it.
Performance and Weight & BalancePAR-10-180
An airplane's fuel tanks are located aft of its loaded CG. As fuel is burned during flight, the CG will
Choose an answer first.
Correct
The answer is B: move forward
Removing weight located aft of the CG removes positive moment faster than it reduces weight, so the CG moves forward (away from the removed weight). The pilot should confirm the landing CG is still within limits.
Removing weight located aft of the CG removes positive moment faster than it reduces weight, so the CG moves forward (away from the removed weight). The pilot should confirm the landing CG is still within limits.
Built to get you through the test, not to keep you busy
ABC
Shuffled answers
Answer order changes on every attempt, so you learn the answer, not where it sits. Each question shows three choices, like the FAA's own sample questions.
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Coverage pacing
Set your exam date and Daily Practice paces new questions so you've seen every one about a week before the exam. Reviews are capped at a day's worth, so a missed week never becomes a wall.
A calibrated pass forecast
Your expected score if you sat the exam today, built from first tries on questions you hadn't seen and weighted like the real blueprint. It stays cautious until you've answered enough, and it never says certain.
1:12:05
Mock exams like the real one
Sixty questions sampled like the FAA test, figure questions included, on the real time limit. Flag questions to come back to, and review every answer when you submit.
14 CFR 91.155(a) · AIM 3-1-4 · ACS PA.I.E
Cited sources
Written against current FAA sources: the eCFR, AIM, PHAK, AFH and the ACS. Every explanation shows where its answer comes from.
Why not B?
Every answer explained
Why the right answer is right, and a "Why not?" for the option you picked, so a miss teaches you something.
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