- The written exam is 200 questions in 4 hours: 100 core + 100 specialty, each timed at 2 hours.
- Clinical Aerospace Medicine is 45% of the six-domain table - the single highest-yield domain.
- Standard fees are $800 written + $800 oral ($1,600 total); late fees add $240 per component.
- Passing standard is a scaled score of 500 on a 200-800 scale.
Quick Facts Snapshot
This cheat sheet condenses the essential numbers and mechanics of Primary Certification in Aerospace Medicine (CPM/AM) into a single scannable reference. It's built for candidates who already know the material and need a fast recall tool the week of the exam - not a substitute for deep preparation. For that deeper prep, pair this page with the full CPM/AM Study Guide 2026.
Exam Format at a Glance
The written examination is delivered on the PARADIGM platform with MonitorEDU remote proctoring when taken outside a physical test center. Candidates get an on-screen calculator, a digital scratchpad, and built-in laboratory reference values - no need to memorize normal lab ranges cold.
- Total questions: 200 multiple-choice items
- Total time: 4 hours
- Core section: 100 questions, 2 hours
- Specialty section: 100 questions, 2 hours
- Oral examination: separate, approximately 45 minutes
Because the core and specialty sections are separately timed, pacing math matters: you have roughly 1.2 minutes per question in each block, and you cannot borrow time from one section for the other. Practicing under that split-timer condition is one of the biggest differences between CPM/AM prep and generic board-exam prep - a topic covered in depth in How Hard Is the CPM/AM Exam? Complete Difficulty Guide 2026.
Key Takeaway
Treat core and specialty as two independent 100-question exams stacked back to back. Build separate pacing checkpoints (e.g., 25 questions per 30 minutes) for each block during timed practice sets on the practice test platform.
Domain Weights You Must Memorize
AOBPM publishes six content domains for primary certification. These percentages describe the overall content table - not a literal split of the 200 combined written items - but they are still the best proxy for where your study hours should go. A full breakdown of each domain's subtopics is in CPM/AM Exam Domains 2026: Complete Guide to All 6 Content Areas.
| Domain | Weight | Relative Priority |
|---|---|---|
| Clinical Aerospace Medicine | 45% | Highest |
| Civil Regulation | 20% | High |
| Biomechanics | 15% | Moderate-High |
| Specialized Areas | 10% | Moderate |
| Environment of Flight | 7% | Low-Moderate |
| History | 3% | Lowest |
Clinical Aerospace Medicine (45%)
This domain carries nearly half the content table weight, so it deserves nearly half your review time. It spans the clinical decision-making that dominates day-to-day aerospace medicine practice.
- Aeromedical disposition of common medical conditions
- Waiver and certification standards applied to real clinical scenarios
- Occupational health surveillance for aircrew and astronauts
Civil Regulation (20%)
The second-largest domain, testing your command of the regulatory framework that governs aeromedical certification decisions.
- Certification standards and medical disqualification criteria
- Regulatory processes for special issuances and waivers
- Documentation and reporting obligations
Biomechanics (15%)
Covers the physical forces acting on the human body in flight and how tolerance limits are established.
- Acceleration forces and G-tolerance
- Impact and crash biomechanics
- Vibration and noise exposure effects
Specialized Areas (10%), Environment of Flight (7%), History (3%)
These three smaller domains still appear on every exam. Don't skip them entirely - a few missed easy points in low-weight domains can matter when your scaled score is close to the passing standard.
- Specialized Areas: space medicine, human factors, unique operational environments
- Environment of Flight: hypoxia, barometric pressure, thermal stress
- History: foundational milestones in aerospace medicine as a discipline
Dates, Deadlines, and Fees
Registration mechanics change year to year, so keep this section as your quick-reference and cross-check the live dates in CPM/AM Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
- Written and oral exams: October 15, 2026
- Registration opens: May 1
- Regular deadline: September 20, 2026
- Final late deadline: September 27, 2026
- Standard fees: $800 written + $800 oral = $1,600 total
- Late fee: $240 per component
AOCOPM also offers first-attempt board-exam scholarships that can cover eligible application, written, and oral fees for candidates with an accepted AOBPM application who don't already hold an AOA board certification. Reimbursement requires receipts, so save all payment confirmations as you register.
Eligibility Requirements
Before you can register, you must satisfy AOBPM's pathway requirements. This is one of the areas where candidates most often get tripped up, since it combines degree, training, and licensure conditions. For the complete walkthrough, see CPM/AM Requirements 2026: Eligibility, Prerequisites & How to Qualify.
- A COCA-accredited osteopathic medical degree, a qualifying LCME-accredited medical degree (US or Canada), or qualifying international medical education with valid ECFMG certification
- Unrestricted licensure in a US state or territory
- Completion of the board-specified two-year ACGME training sequence: one year of aerospace medicine plus one transitional year
- An MPH or equivalent postgraduate degree covering biostatistics, epidemiology, health services management, and environmental health
- Compliance with AOA ethical standards
Passing Standard
The published initial-certification passing standard is a scaled score of 500 on a 200-800 scale. This is not a raw percentage of 200 questions correct - it's a scaled score derived from the exam's psychometric model, which is why two exam forms of different difficulty can still use the same 500 cutoff fairly. For a deeper explanation of how the scale works and what it means for your prep, read CPM/AM Passing Score 2026: Exactly What You Need to Pass. If you're weighing whether the certification is worth the investment of time and fees against your career goals, Is the CPM/AM Certification Worth It? Complete ROI Analysis 2026 covers that decision in detail, and CPM/AM Salary Guide 2026: Complete Earnings Analysis looks at the earnings side.
Key Takeaway
Because the score is scaled, don't obsess over hitting an exact raw-question target. Focus study hours proportionally on domain weight - Clinical Aerospace Medicine and Civil Regulation together account for 65% of the content table.
After You Pass: OCC and Reverification
Passing the written and oral exams isn't the end of the certification lifecycle. AOBPM describes an initial certificate as active for two years, after which diplomates enter annual reverification through Osteopathic Continuous Certification (OCC), with longitudinal assessment beginning in the certificate's expiration year.
- Annual assessment: 15 untimed, open-book questions
- Passing standard: 75%, with reattempts available
- Annual fee: $150 (late fee $50)
- CME requirement: 60 CME credits across the 2025-2027 three-year cycle, including 24 specialty-specific credits
- Additional requirements: active licensure and attestation to quality-improvement participation
Note that the renewal assessment uses a different blueprint than the primary-certification exam this cheat sheet covers - don't confuse the two when planning your review.
Final Week Review Plan
In the last week before your October 15 exam date, resist the urge to start new material. Instead, cycle through domains in proportion to their weight, saving your final one to two days for timed, full-length practice under the same core/specialty split you'll face on test day.
Clinical Aerospace Medicine (45%)
- Re-drill aeromedical disposition scenarios
- Review waiver and special-issuance case patterns
Civil Regulation (20%)
- Refresh certification standards and disqualification criteria
Biomechanics (15%) + Specialized Areas (10%)
- Review G-tolerance and impact biomechanics
- Skim space medicine and human factors highlights
Environment of Flight (7%) + History (3%)
- Quick pass on hypoxia and thermal stress
- Confirm key historical milestones
Full Timed Simulation
- Run a 100-question, 2-hour core block and a 100-question, 2-hour specialty block
- Practice on-screen calculator and scratchpad functions beforehand
This plan intentionally mirrors domain weighting rather than treating all six domains equally - a mistake many candidates make when they run out of time and end up under-reviewing Clinical Aerospace Medicine while over-preparing on History. For a week-by-week plan spanning the full study cycle rather than just the final week, see the CPM/AM Study Guide.
FAQ
200 multiple-choice questions total, split into a 100-question core section and a 100-question specialty section, each separately timed at two hours for a combined four-hour exam.
The published initial-certification passing standard is a scaled score of 500 on a 200-800 scale, not a raw percentage of correct answers.
Clinical Aerospace Medicine, which represents 45% of the six-domain content table - by far the largest single domain, followed by Civil Regulation at 20%.
Standard fees total $1,600: $800 for the written exam and $800 for the oral exam. Registering after the regular deadline adds a $240 late fee per component.
Your initial certificate is active for two years, after which you enter annual reverification through Osteopathic Continuous Certification, including a 15-question annual assessment and ongoing CME requirements.
Keep this cheat sheet bookmarked as a quick-reference during your final review cycle, and use timed practice questions to convert these facts into exam-day speed and accuracy.