Private Pilot Knowledge Test: How to Prepare and Pass

The private pilot knowledge test, better known as "the written," has 60 questions and a 2-hour time limit, and you need 70% or better to pass, according to the FAA's Airman Knowledge Testing Matrix (revised September 25, 2026). Before you can take it, an authorized instructor has to endorse you as prepared.

The matrix lists it as the Private Pilot Airplane test (code PAR), with a minimum age of 15. You need to be at least 16 to train with us, so age won't be what holds you up. Here's what you need before test day, what it costs, what it covers, and a realistic way to prepare while you fly out of Northeast Philadelphia Airport (KPNE).

What do you need before you can take the test?

Three things: an endorsement, an FAA Tracking Number and acceptable ID.

• A knowledge test endorsement. An authorized instructor who taught you the required knowledge areas, or reviewed your home study, must certify that you're prepared (14 CFR 61.35(a)(1), 61.103(d)). It can be a logbook endorsement or a signed written statement from an authorized ground or flight instructor (testing matrix).
• An FAA Tracking Number (FTN). The matrix asks you to create a profile in IACRA to get an FTN before the test, and the FTN is printed on your score report. If you already used IACRA for your student pilot certificate, you have one. Our student pilot certificate guide covers IACRA setup.
• Acceptable ID. The regulation requires ID showing your photo, signature and date of birth (61.35(a)(3)), and the testing matrix adds that it must be valid and current and show your physical residential address. The information can come from more than one document. U.S. citizens and resident aliens can usually use a state driver's license, another government-issued ID card or a passport (residents can also use an alien residency card). Other non-U.S. citizens bring a passport plus a U.S. state driver's license or another government-issued ID card.

If you're under 18 without an acceptable ID, a parent or legal guardian can come with you, show their own ID and vouch for your identity. The testing matrix also covers what to do if your ID doesn't show your home address: you can use a parent's address or bring one of the address-verification documents it lists. A P.O. box, rural route or business address doesn't count.

Where do you take it, and what does it cost?

FAA knowledge tests are given at PSI testing centers. You find a center by postal code and register on PSI's FAA site, faa.psiexams.com, which the FAA's Airman Testing page also links to.

PSI's fee is about $175 per attempt, as of October 2026. That's the figure in our training cost estimate, but you pay it to PSI and PSI sets it, so confirm the current amount when you register. The test fee is predictable; your overall training cost isn't. It depends on your pace, the weather and how often you fly, so we can't guarantee an exact total.

A few things to know about test day and after:

• The test may include unscored validation questions. They don't count toward your score, and the 2-hour limit already allows time for them (testing matrix).
• You get your score report, the Airman Knowledge Test Report (AKTR), when you finish. It shows your score and codes for any questions you missed (FAA testing FAQ).
• Keep it. You present it when you apply for your checkride (61.39(a)(2)), and the examiner can review your missed areas with you. PSI's site lets you print a duplicate.

What's on the private pilot knowledge test?

The test covers the aeronautical knowledge areas listed in 14 CFR 61.105(b). In plain terms:

• Regulations for private pilots, and NTSB accident reporting
• The Aeronautical Information Manual and FAA advisory circulars
• VFR charts and navigation: pilotage, dead reckoning and navigation systems
• Radio communication procedures
• Weather: spotting critical weather, avoiding windshear, and using reports and forecasts
• Collision and wake-turbulence avoidance
• Density altitude and its effect on takeoff and climb
• Weight and balance
• Aerodynamics, powerplants and aircraft systems
• Stall and spin awareness
• Aeronautical decision-making
• Preflight action, including runway lengths, takeoff and landing data, fuel and alternatives

Charts, figures and diagrams on the test come from the FAA's testing supplement, FAA-CT-8080-2H, a free download on the FAA's testing supplements page. Practicing with its sectional excerpts and performance charts is time well spent.

The FAA doesn't publish live test questions, and the order and wording vary from one test to the next (FAA testing FAQ). Missed questions are coded to the Private Pilot Airplane ACS, the same standard your checkride follows, so real understanding pays off twice.

Training at KPNE, a towered airport near Philadelphia's Class B airspace, helps here: many of the airspace, radio and chart topics on the test are things you'll also work through on lessons.

How can you study for it?

Part 61 doesn't require one particular course. You log ground training with an authorized instructor or complete a home-study course (61.105(a)), then an instructor endorses you. As a Part 61 flight school, we support two common routes:

• Merlin's evening ground school. We run an evening ground school course, and our private pilot cost estimate budgets $800 for it, as of October 2026. Ask us when the next session starts and what format it uses.
• Self-study with instructor review. You work through a home-study course or the FAA's own materials, and one of our FAA-certificated instructors reviews your work, covers weak spots in ground lessons, and endorses you when you're ready.

Either way, these free FAA references are the core material:

• The Pilot's Handbook of Aeronautical Knowledge: aerodynamics, systems, weather, navigation and decision-making
• The Airplane Flying Handbook: how the procedures you fly connect to the theory
• The Aeronautical Information Manual: airspace, airport operations and radio procedures
• The testing supplement and the ACS linked above, plus the FAA's official sample tests on PSI's site

Commercial test-prep courses and question apps can help too. Use them to find your gaps, not to memorize answers. Our ground school guide compares live classes, self-paced courses and one-on-one lessons.

When should you take it?

It's a tradeoff, and there's no single right moment. The test has no flight-time prerequisite. You need the endorsement and acceptable ID (61.35), and you must meet the test's minimum age of 15 (testing matrix).

Taking it earlier:

• keeps your ground knowledge moving alongside your flying
• puts weather days to use
• clears it before the final stretch of checkride prep

Taking it later:

• gives the material context from your flying, so airspace and weather feel concrete
• keeps it fresh for your checkride's oral portion

Our private pilot timeline places it in Phase 4, around weeks 16 to 24 at a steady pace, alongside checkride prep. That's a typical pace, not a rule. Every student progresses differently, so we can't guarantee when you'll be ready for the test or the checkride.

Two rules shape the decision:

• Your result is good for 24 calendar months. You must pass the knowledge test within the 24 calendar months before the month you complete your checkride (61.39(a)(1)). Pass in October 2026, and it covers a checkride completed by the end of October 2028. A long break in training can let an early pass expire.
• Missed areas get covered before the checkride. Your instructor must endorse that you've shown satisfactory knowledge of the areas you missed (61.39(a)(6)(iii)), and the ACS lists any elements you were deficient on among the minimum elements the examiner tests on the checkride. Treat the codes on your report as a study list.

What does a realistic study rhythm look like?

Steady work beats cramming. A rhythm that fits alongside lessons:

• Set weekly study blocks between lessons, ideally on what you're flying next, so the reading and the airplane reinforce each other.
• Take practice tests regularly, then trace every wrong answer back to the handbook, regulation or supplement figure behind it.
• Turn weather cancellations into ground lessons. Weather cancellations carry no penalty with us, and we can use that time for ground instruction. If our training aircraft is down for maintenance, we use that time for ground lessons and written-test prep too.
• Tell your instructor what's hard. Ground time aimed at your weak areas does more than rereading everything.

How long it takes to be ready varies with how much time you can study each week, how often you fly, and how much of the material is new to you. When your practice scores are consistent and you can explain the reasoning behind your answers, ask your instructor to review you for the endorsement.

What happens if you don't pass?

It's a setback, not the end of your training. To retest, you need more training from an authorized instructor who has determined you're proficient enough to pass, and an endorsement from the instructor who gave that training (61.49).

The endorsement can be a signed statement, a logbook entry or the instructor's statement on your failed test report, and you bring that failed report to the testing center (testing matrix). Plan on paying PSI's fee again for the new attempt. Your report's codes show which areas to focus on, so retraining can target those instead of starting over.

Next steps

• New to flying? Book a discovery flight, an introductory Part 61 flight lesson at KPNE with one of our CFIs. You must be 16 or older.
• Want to talk through ground school timing or a study plan first? Book a free phone consultation.
• See where the test fits in our private pilot timeline, then read what to expect on your checkride.