CPL Passing Score 2026: Exactly What You Need to Pass

The Exact Passing Score

If you're searching for a single number, here it is: the FAA requires a score of 70% on the Commercial Pilot Airplane knowledge test, known by its code CAX. That means answering at least 70 of the 100 scored questions correctly. There's no curve, no partial credit for near-misses, and no rounding up from 69%. Seventy percent is the floor, not a target.

The CAX is administered through PSI Services LLC at FAA-approved testing centers, and the current fee is $175 plus applicable tax. The test is computer-based, contains 100 scored multiple-choice questions and five additional unscored validation questions (105 total items on the screen), and you're given 2 hours and 30 minutes to finish. The unscored questions are mixed in without being labeled, so you should treat every single question on the screen as if it counts - because from your seat, you can't tell which five don't.

How the CAX Is Scored

Each of the 100 scored questions carries equal weight - there's no domain-by-domain minimum you must clear individually, and the FAA does not publish a sub-score breakdown by content area on your test report. Your overall percentage is what matters for pass/fail. That said, the practical implication is important: if you're weak in one or two of the twelve domains, you can still pass the CAX by being strong everywhere else. But that strategy is risky, because weak domains tend to resurface later - in your oral exam, in your practical test scenarios, and eventually in the cockpit.

The five unscored questions exist so the FAA can field-test new question wording and difficulty before adding them to the official scored pool. You won't know which ones are unscored, so don't waste time trying to guess. Answer every question as carefully as you would any other.

For a full breakdown of how difficulty is distributed across question types and content areas, see How Hard Is the CPL Exam? Complete Difficulty Guide 2026, which walks through why certain question formats (performance charts, weight and balance problems, weather interpretation) take longer per question than straightforward regulation recall.

Registration, Fee, and Test-Day Mechanics

Before you can even sit for the CAX, you need to satisfy the FAA's eligibility gate for knowledge-test applicants: you must be at least 16 years old and present an accepted ground-school completion document or an instructor endorsement confirming you're prepared for the test. This is separate from certificate issuance, which requires age 18, English proficiency, holding at least a private pilot certificate, the required logbook endorsements, the aeronautical experience called for under your training path, and a passing practical test.

Here's the sequence most candidates follow:

• Complete ground school or receive a CFI endorsement confirming knowledge-test readiness.
• Schedule the CAX through PSI Services LLC and pay the $175 fee plus tax.
• Arrive with acceptable photo ID and your endorsement documentation.
• Sit for up to 2 hours 30 minutes to answer 105 total questions (100 scored, 5 unscored).
• Receive your Airman Knowledge Test Report immediately, showing pass/fail and the percentage scored.

If you want the full cost picture - ground school, checkride fees, examiner costs, and how the $175 CAX fee fits into your total training budget - CPL Certification Cost 2026: Complete Pricing Breakdown lays out the numbers line by line.

Why Domain Coverage Matters More Than the Number 70

The FAA organizes CAX content around twelve domains under the current standard, FAA-S-ACS-7B, effective May 31, 2024. Because your score is a single blended percentage, it's tempting to think you can skip a weak domain and make up the difference elsewhere. In practice, that's a bad bet - the domains aren't evenly distributed in difficulty, and several of them (weight and balance, aircraft performance, weather reports and forecasts) involve multi-step problems where a single misread chart can cost you more than one question if similar reasoning appears twice on the test.

The twelve domains are:

For a deeper walkthrough of each domain with sample question styles, see CPL Exam Domains 2026: Complete Guide to All 12 Content Areas.

Which Domains Cost Candidates the Most Points

Not every domain feels the same on test day. Based on the structure of the questions themselves, three types of content tend to eat the most time and generate the most errors:

• Weight and Balance (Domain 4): These are computation questions, not recall questions. A single arithmetic slip changes your answer entirely, and the multiple-choice options are often designed to match common calculation errors.
• Aircraft Performance and Limitations (Domain 5): Chart-reading under time pressure. Candidates who haven't practiced interpolating between chart lines lose time second-guessing themselves.
• Weather Reports and Forecasts (Domain 7): Decoding METAR and TAF strings quickly requires memorized formats, not just conceptual understanding.

Regulations (Domain 1) and Airspace (Domain 9) tend to be more recall-based and less time-consuming per question, which is why many candidates report they "feel" easier - but that doesn't mean you can skip them, since they still carry equal point value.

A Domain-Focused Prep Timeline

Generic study techniques (spaced repetition, timed drills) only help if you're applying them to the right domains at the right time. Here's a sequencing approach built around the CAX's own structure rather than a one-size-fits-all calendar:

For a more detailed breakdown of pacing and daily study structure, CPL Study Guide 2026: How to Pass on Your First Attempt covers a full first-attempt strategy. If you want to see how your practice scores compare to real candidate outcomes, CPL Pass Rate 2026: What the Data Shows breaks down the data further.

After You Pass: Report Validity and What Comes Next

Once you clear 70%, PSI issues an Airman Knowledge Test Report showing your score. That report is generally valid for 24 calendar months, meaning you need to complete your practical test (checkride) within that window or the knowledge test result may no longer apply toward certificate issuance. This is a meaningful planning detail - if your flight training stretches out due to aircraft availability, weather, or funding, track your report's expiration date the same way you'd track a medical certificate's.

Passing the CAX is one requirement among several for certificate issuance. You'll also need to be at least 18, demonstrate English proficiency, hold at least a private pilot certificate, secure the required instructor endorsements, log the aeronautical experience for your training path (Part 61 airplane applicants generally need 250 flight hours), and pass the practical test with a designated pilot examiner. Even after issuance, exercising commercial pilot privileges remains subject to flight-review, recency, and medical requirements - the knowledge test is the beginning of the process, not the end of it.

To see the complete eligibility picture before you even schedule the CAX, review CPL Requirements 2026: Eligibility, Prerequisites & How to Qualify. And if you're weighing whether the entire certification path is worth the time and cost relative to career outcomes, Is the CPL Certification Worth It? Complete ROI Analysis 2026 and CPL Salary Guide 2026: Complete Earnings Analysis cover the earning side, while CPL Jobs covers who's actually hiring.

If you want to practice against realistic CAX-style questions across all twelve domains before test day, running through timed sets on our practice test platform is one of the most direct ways to see where your score actually stands relative to that 70% line - and to push your margin well above it before you ever sit down at a PSI testing center.

FAQ