If you're studying for the FAA Private Pilot Airplane (PAR) Knowledge Test, you already know the drill: 60 multiple-choice questions, 2.5 hours, 70% to pass. What separates students who pass on the first attempt from those who retest isn't more hours of study — it's the right kind of practice. This page gives you a private pilot practice test that pulls from the live FAA question bank, scores you against the actual ACS knowledge codes, and tells you exactly which subject areas you're weak in before you spend $175 at a PSI testing center.
What's actually on the FAA Private Pilot Knowledge Test
The PAR exam is the written component required by FAR 61.103 before you can take your checkride. You'll see 60 questions drawn from a pool of roughly 900, sampled across the subject areas the FAA publishes in the Airman Certification Standards (ACS). The test is closed-book except for an FAA-supplied supplement (sectional excerpts, weather charts, performance tables, E6B-style problems).
Subject area breakdown
| Subject Area | Approximate % of test | Sample topics |
|---|---|---|
| Regulations (Part 61, 91, NTSB 830) | 20–25% | Currency, medical, VFR minimums, FAR 91.103 preflight |
| Weather & weather services | 15–20% | METAR/TAF decoding, fronts, icing, thunderstorms |
| Navigation & cross-country planning | 15–20% | Sectional symbols, dead reckoning, fuel planning |
| Aircraft systems & aerodynamics | 10–15% | Stalls, load factor, engine systems, P-factor |
| Performance & weight & balance | 10–15% | Density altitude, takeoff/landing distance, CG envelope |
| Airport ops & airspace | 10–15% | Class B/C/D/E entry, FAR 91.155 cloud clearances |
| Aeromedical, ADM, runway incursion | 5–10% | Hypoxia, hyperventilation, CRM, hot spots |
How to use this private pilot practice test
A practice test is only useful if it does two things: expose what you don't know and stop wasting time on what you do. Most free quizzes online recycle the same 200 obvious questions. Real exam prep needs to track your accuracy by ACS code and adapt.
- Take a full 60-question diagnostic — no notes, no calculator other than what you'd bring to PSI. Time yourself at 2.5 hours. This is your baseline.
- Review every miss with the explanation, not just the right answer letter. If the question is about FAR 91.155 cloud clearance in Class E below 10,000 ft, you need to understand 3-152 (3 SM visibility, 500 below, 1,000 above, 2,000 horizontal), not memorize that the answer is C.
- Drill weak areas in 10–20 question blocks. Spaced repetition beats marathon sessions. If weather decoding is your floor, do a TAF/METAR set every morning until you score 90%+ three sessions in a row.
- Re-take full 60-question simulations until you're consistently scoring 85%+. The FAA passing score is 70%, but you want margin — testing-day adrenaline costs most students 5–10 points.
- Get the endorsement. FAR 61.35 requires a CFI (or approved home-study program endorsement) sign-off before you can sit for the test.
The questions students miss most
After analyzing thousands of practice attempts, the same categories trip up nearly every student pilot:
- Airspace dimensions and entry requirements. Specifically Class B (clearance required, Mode C within 30 NM), Class C (two-way radio established), and Class E surface areas.
- VFR weather minimums under FAR 91.155. Memorize the table cold — Class G day below 1,200 AGL is the trap (1 SM, clear of clouds).
- Aeromedical regulations. 8 hours bottle-to-throttle, 0.04% BAC, the FAA's IMSAFE checklist as a personal standard.
- Sectional chart symbology. MOAs vs. Restricted vs. Prohibited, parachute jump areas, obstacle heights MSL vs. AGL.
- Weight and balance arithmetic. Moment = weight × arm. Practice until you can run a CG calculation in under 3 minutes.
- Aerodynamics of the turn. Load factor at 60° bank = 2 Gs, stall speed increases by the square root of load factor.
What the practice test won't teach you (but the checkride will)
The written is just gate one. After you pass, your DPE will probe the application of these regs during the oral. FAR 61.107 lists the flight proficiency areas your CFI must endorse you for — preflight, airport ops, takeoffs/landings, performance maneuvers, ground reference, navigation, slow flight & stalls, basic instrument, emergencies, and night ops. The knowledge test doesn't test these directly, but the oral exam will, and the questions get harder when you can't tie a regulation to a real cockpit decision.
This is why simply grinding question banks isn't enough. A student who memorized that VFR minimums in Class E above 10,000 MSL are 5-111 will still fail an oral if they can't explain why the FAA built the rule that way (TAS-based separation from IFR traffic).
How GroundScholar helps with this
GroundScholar's private pilot practice test runs on the live FAA PAR question pool, but the difference is what happens after you click an answer. Every question is tagged to its ACS code and the underlying FAR or AIM reference, and every cite is verified against the current regulation — not a 2019 PDF someone scraped. When you miss a question, you get a plain-English explanation, the source cite (linked), and a follow-up drill if your accuracy on that ACS code is below 80%.
When you're ready to move past the written, the same platform runs a mock oral checkride with an AI examiner that adapts to your answers — exactly the way a DPE narrows in on weak spots. You'll get a pass-prediction score and a list of exactly which ACS tasks you're not ready to defend yet. Most students use the practice test to clear the FAA written, then keep the subscription open through their checkride.
Costs and timeline
| Item | Cost | Notes |
|---|---|---|
| FAA Knowledge Test fee (PSI) | ~$175 | Required before checkride |
| Knowledge test validity | 24 calendar months | Must take practical within 24 mo of written |
| Minimum passing score | 70% | 42 of 60 correct |
| Retake waiting period | None (with new endorsement) | But CFI sign-off required again |
| GroundScholar practice test | Free to start | Full PAR bank + adaptive drills |
Ready to stop guessing?
The difference between a 68 and an 88 on the PAR test is roughly 15 hours of targeted practice — not 50 hours of re-reading the PHAK. Take a diagnostic, find your weak ACS codes, drill them, retest. That's the loop.