FAA Commercial Pilot (CAX) (FAA Commercial Pilot Airplane Knowledge Test) — Free Online Mock Test
FAA written knowledge test · 100 MCQ in 180 min · Pass 70%. Commercial operations, weight & balance, advanced systems. · Official language: English.
FAA Commercial Pilot (CAX) exam at a glance
FAA Commercial Pilot (CAX) full-length mock tests
Attempt 50 full-length FAA Commercial Pilot (CAX) mock tests, each a distinct question set built on the real 100-question, 180-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
FAA Commercial Pilot (CAX) key facts & eligibility
| Conducting body | Federal Aviation Administration (FAA); tests delivered by PSI Services |
|---|---|
| Official website | faa.gov ↗ |
| Mode | The Commercial Pilot Airplane airman knowledge test (test code CAX): a computer-based, 100-question multiple-choice exam with a 2.5-hour limit at an FAA-approved PSI testing centre. It is one requirement toward the commercial certificate, alongside flight experience and the practical test. |
| Frequency | On demand, year-round by appointment. |
| Scoring & marking | Multiple-choice, drawn from the Commercial Pilot Airman Certification Standards; a minimum score of 70% (70 of 100) is required to pass. Your report lists the areas of any missed questions for review at the checkride. |
| Score validity | A passing knowledge-test result is valid for 24 calendar months in which to complete the practical test. |
| Language | English (an FAA requirement for airman certification). |
Who is eligible for FAA Commercial Pilot (CAX)?
You must be at least 16 to take the knowledge test (18 to hold the commercial certificate) and hold the relevant instructor endorsement or approved course completion. It builds on holding a private pilot certificate and meeting commercial aeronautical-experience requirements.
Last verified July 2026 against FAA — Testing. Always confirm current details on the official website before you register.
FAA Commercial Pilot (CAX) section breakdown
The FAA Commercial Pilot (CAX) mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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FAA Commercial (100 Q)
FAA Commercial Pilot (CAX) scoring & marking scheme
Strategy: FAA Commercial Pilot (CAX) has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: FAA Commercial (pass 70%).
How FAA Commercial Pilot (CAX) is conducted
- Mode
- Test format
- Backtracking
- Mark for review
Tools available during the FAA Commercial Pilot (CAX) exam
-
Calculator
Wrexa Edge renders these tools inside the mock test exactly as they appear on the real FAA Commercial Pilot (CAX) exam — same shortcuts, same behaviour.
FAA Commercial Pilot (CAX) time strategy
With 100 questions in 180 minutes, you have about 108 seconds per question on average. Successful candidates aim for the following pacing on each section:
- FAA Commercial (100 Q)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
FAA Commercial Pilot (CAX) topics covered
Across the 50 Wrexa Edge variants of FAA Commercial Pilot (CAX), the following topics appear most often (sample distribution from one variant):
FAA Commercial (100 Q)
- Aviation — Operations · 13
- Aviation — Weather · 10
- Aviation — Aerodynamics · 9
- Aviation — Performance · 9
- Aviation — Instruments · 9
- Aviation — Regulations · 9
- Aviation — Systems · 8
- Aviation — Navigation · 6
FAA Commercial Pilot (CAX) difficulty calibration
Advanced tier. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep.
FAA written knowledge test · 100 MCQ in 180 min · Pass 70%. Commercial operations, weight & balance, advanced systems. · Official language: English.
Verified content — Wrexa Edge's FAA Commercial Pilot (CAX) bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for FAA Commercial Pilot (CAX)
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
Expert take: what FAA Commercial Pilot (CAX) really tests
The Commercial Pilot knowledge test (CAX) is a 100-question, 70%-to-pass exam from the Commercial Pilot ACS, adding depth on complex-aircraft systems, performance and the rules for flying for compensation or hire. A pass is valid 24 months toward the practical test, and missed areas resurface at the checkride oral.
Preparation tips
- Study the FAA handbooks and Commercial ACS; the step up from private is real, especially performance and regs.
- Master weight-and-balance and performance-chart problems, which are heavily tested.
- Aim well above 70% — weak areas become oral questions at your commercial checkride.
Common mistakes to avoid
- Assuming private-pilot knowledge is enough for the deeper commercial questions.
- Letting the 24-month knowledge-test validity lapse before the practical test.
FAA Commercial Pilot (CAX) study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Study the FAA Airplane Flying Handbook and commercial regulations
- Cover complex-aircraft systems, performance and aerodynamics
- Work the Commercial Pilot ACS knowledge areas
- Drill FAA CAX-style questions with a reputable test bank
- Master performance charts, weight-and-balance and regulations for hire
- Track weak areas
- Sit full 100-question timed practice tests
- Push comfortably past the 70% pass mark
- Note weak areas for the checkride oral
Where FAA Commercial Pilot (CAX) can take you
A strong FAA Commercial Pilot (CAX) result opens up these careers and higher-study paths:
- Toward the commercial certificate
- Professional-pilot pathway
- Gateway to further ratings
- Higher privileges
Best books & official prep for FAA Commercial Pilot (CAX)
- FAA Airplane Flying Handbook & Pilot’s Handbook of Aeronautical Knowledge — FAA
- Commercial Pilot test-prep (ASA or Gleim) — ASA / Gleim
Official practice: Study the FAA handbooks and the Commercial Pilot ACS (free on faa.gov), then drill the knowledge areas — commercial adds topics like complex-aircraft systems, performance and regulations for compensation/hire.
Previous-year papers: The FAA publishes CAX sample questions and the ACS; commercial test banks mirror the current pool.
Frequently asked questions
- What is the FAA Commercial Pilot (CAX) exam pattern?
- FAA Commercial Pilot Airplane Knowledge Test contains 100 questions across 1 section: FAA Commercial (100 Q). Total duration is 180 minutes (about 108 seconds per question).
- Does FAA Commercial Pilot (CAX) have negative marking?
- No — FAA Commercial Pilot (CAX) has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is FAA Commercial Pilot (CAX) scored?
- Scaled score range: 100 to 1000. FAA Commercial (pass 70%).
- How can I practise FAA Commercial Pilot (CAX) online for free?
- Wrexa Edge gives you 3 free full-length FAA Commercial Pilot (CAX) mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of FAA Commercial Pilot (CAX)?
- FAA Commercial Pilot (CAX) is rated Advanced difficulty on Wrexa Edge. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep. FAA written knowledge test · 100 MCQ in 180 min · Pass 70%. Commercial operations, weight & balance, advanced systems. · Official language: English.
- How long is the FAA Commercial Pilot (CAX) exam?
- FAA Commercial Pilot (CAX) runs for 180 minutes total. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in FAA Commercial Pilot (CAX)?
- FAA Commercial Pilot (CAX) is split into: FAA Commercial (100 Q). Each section is timed and weighted separately. FAA written knowledge test · 100 MCQ in 180 min · Pass 70%. Commercial operations, weight & balance, advanced systems. · Official language: English.
- What tools or aids are allowed during FAA Commercial Pilot (CAX)?
- On-screen scientific calculator (matches the real exam interface). Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the FAA Commercial Pilot (CAX) test adaptive?
- No — FAA Commercial Pilot (CAX) is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many FAA Commercial Pilot (CAX) mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct FAA Commercial Pilot (CAX) variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 5000 unique practice questions in the real test-day interface.
- Is there a free FAA Commercial Pilot (CAX) test series 2026?
- Yes. The Wrexa Edge FAA Commercial Pilot (CAX) test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are FAA Commercial Pilot (CAX) previous year question–style papers included?
- Every FAA Commercial Pilot (CAX) mock is modelled on the official exam pattern and the style of previous years' papers — the same 100-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free FAA Commercial Pilot (CAX) mock test online?
- Wrexa Edge's FAA Commercial Pilot (CAX) mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the FAA Commercial Pilot (CAX) mock test on mobile?
- Yes. FAA Commercial Pilot (CAX) mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the FAA Commercial Pilot (CAX) syllabus?
- The FAA Commercial Pilot (CAX) syllabus maps to its 1 section: FAA Commercial (100 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for FAA Commercial Pilot (CAX)?
- You must be at least 16 to take the knowledge test (18 to hold the commercial certificate) and hold the relevant instructor endorsement or approved course completion. It builds on holding a private pilot certificate and meeting commercial aeronautical-experience requirements. Wrexa Edge focuses on realistic FAA Commercial Pilot (CAX) practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the FAA Commercial Pilot (CAX) exam and how should I prepare?
- Official FAA Commercial Pilot (CAX) exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free FAA Commercial Pilot (CAX) mocks with instant scoring so you can track your readiness week by week.
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