- ACE-AO is administered by AAAE and tests 100 multiple-choice questions in 120 minutes with a 70% passing score.
- Standard enrollment costs $555; a $395 student rate is available with a current course schedule at registration.
- The exam is closed-book and delivered via TopClass with recorded remote proctoring - webcam, mic, and photo ID required.
- Content is built on the FAA Part 139-based curriculum: ACM, self-inspections, ARFF, wildlife hazards, SMS under Subpart E, and more.
What the ACE-AO Credential Actually Covers
The Airport Certified Employee - Airfield Operations designation (ACE-AO) is issued by the American Association of Airport Executives (AAAE) as part of the broader ACE program. It's built specifically for people who work - or want to work - on the airfield operations side of a certificated airport, and it's structured around the regulatory framework that governs day-to-day airfield safety.
Unlike a general aviation certificate, ACE-AO is narrowly scoped: it validates knowledge of the operational duties, inspection routines, and safety systems that keep a Part 139 airport running legally and safely. If you're trying to figure out exactly what this credential is before committing time and money, our overview on what ACE-AO is and the plain-language breakdown of what ACE-AO means are good starting points alongside this article.
Who Pursues ACE-AO and Why
ACE-AO is aimed at people working in or entering airport operations roles - airfield inspectors, operations agents, duty managers, and staff who handle Part 139 compliance tasks. Airports use it as a way to standardize operational knowledge across staff, and some operations departments treat it as a benchmark for promotion or hiring into airfield-focused positions.
If you're weighing whether to add this to your resume, it helps to look at how the credential is discussed in hiring contexts. Our posts on ACE-AO jobs and the ROI-focused piece Is the ACE-AO Certification Worth It? dig into how employers reference the credential and what it signals about a candidate's operational readiness.
Key Takeaway
ACE-AO is a role-specific credential - it's not a broad aviation management certificate. If your job or target job doesn't touch airfield operations, self-inspections, or Part 139 compliance, this isn't the right ACE track.
Registration, Fees, and What's Included
Enrollment mechanics matter as much as content knowledge, since a good chunk of confusion around this credential comes from not knowing what you're actually paying for. Standard enrollment is $555, and it's the same rate for AAAE members and non-members - membership is optional and doesn't unlock a discount on enrollment itself. Students can qualify for a reduced $395 rate by submitting a current course schedule at the time of registration.
Enrollment includes electronic study modules and one exam attempt. It does not include printed materials or formal review courses - those are purchased separately if you want them. AAAE also offers an optional official flashcard app, Blank Slate ACE Operations, priced at $150 for 90 days of access, which some candidates use as a supplemental drilling tool rather than a primary study resource.
| Item | Cost | Notes |
|---|---|---|
| Standard enrollment | $555 | Members and non-members, same rate |
| Student enrollment | $395 | Requires current course schedule at registration |
| Failed exam retake | $75 | Applies if you don't pass on first attempt |
| Blank Slate ACE Operations app | $150 | Optional, 90 days of access |
For a full line-item breakdown of what you're paying for and when, see ACE-AO Certification Cost 2026: Complete Pricing Breakdown. If you're still confirming you meet eligibility before paying, check ACE-AO Requirements 2026 first.
Exam Format and Delivery
The ACE-AO exam consists of 100 multiple-choice questions administered over 120 minutes. You need a score of 70% - 70 correct answers - to pass. There's no partial credit structure to worry about; it's a straightforward correct/incorrect count against that threshold.
AAAE delivers the exam through TopClass with recorded remote proctoring, meaning you don't need to travel to a testing center, but you do need to meet the technical requirements: a working computer, webcam, microphone, and a government-issued photo ID for verification. The exam is closed-book, so there's no pulling up the Airport Certification Manual or your notes mid-test - everything has to be internalized beforehand.
For a deeper look at exactly how the passing threshold works and what margin of error it leaves you, read ACE-AO Passing Score 2026: Exactly What You Need to Pass. If you're trying to gauge realistic difficulty before enrolling, How Hard Is the ACE-AO Exam? and ACE-AO Pass Rate 2026 both address that question directly using what's actually documented about the exam.
The Part 139-Based Curriculum
ACE-AO content is built directly on FAA Part 139 - the regulation governing certification of airports serving commercial air carrier operations. This isn't abstract airport management theory; it's the operational detail that airfield staff apply on shift. Candidates should expect the exam to draw from these areas:
Airport Certification Manual (ACM), Records, and Personnel
Understanding what the ACM contains, how it's maintained, and what recordkeeping and personnel requirements Part 139 imposes on certificated airports.
- Know the purpose and structure of the ACM as the airport's core compliance document
Self-Inspections and Airfield Surfaces
Routine inspection procedures for runways, taxiways, and aprons, plus recognizing surface conditions that require corrective action or reporting.
- Frequency and documentation standards for self-inspections
Markings, Signs, and Lighting
Standard airfield markings, signage, and lighting systems, including what deficiencies must be flagged during inspections.
- Recognize noncompliant or degraded markings and lighting
Snow and Ice Control, ARFF, and Hazardous Materials
Winter operations procedures, aircraft rescue and firefighting (ARFF) requirements, and safe handling of hazardous materials on the airfield.
- ARFF response expectations tied to Part 139 index requirements
Emergency Planning, Pedestrians and Vehicles, Wildlife Hazards
Airport emergency plans, controlling vehicle and pedestrian movement on the airfield, and wildlife hazard management programs.
- Know the components of a wildlife hazard assessment and mitigation plan
Obstructions, Construction, Condition Reporting, and Safety Management Systems
Identifying and managing obstructions and construction activity, airport condition reporting practices, and SMS principles under Part 139 Subpart E.
- Understand how SMS under Subpart E fits into daily operational decision-making
Because this content spans so many distinct operational areas, it helps to see them mapped out as a full set rather than piecemeal. Our companion resource, ACE-AO Exam Domains 2026: Complete Guide to All Content Areas, walks through each area in more depth, and the ACE-AO Cheat Sheet condenses the must-know facts into a single reference page for last-week review.
Building a Prep Timeline Around the Content
AAAE recommends at least 90 days of preparation, and self-study is the standard path - there's no mandatory instructor-led course. Because the content is regulation-heavy and spans distinct operational domains, most candidates do better spreading review across weeks rather than cramming, and pacing it around the specific topic clusters above rather than a generic study calendar.
Foundations: ACM, Records, and Self-Inspections
- Read through the electronic study modules covering the ACM structure and Part 139 recordkeeping
- Memorize self-inspection frequency and reporting requirements
Physical Airfield: Surfaces, Markings, Lighting, Snow/Ice, ARFF
- Study standard markings, sign types, and lighting systems until you can identify deficiencies quickly
- Review ARFF index requirements and snow/ice control procedures
Safety Programs: Emergency Planning, Wildlife, Hazmat, SMS
- Work through emergency plan components and wildlife hazard management steps
- Study SMS principles under Subpart E and how they apply operationally
Integration and Practice
- Take timed practice questions to build comfort with the 120-minute, 100-question format
- Revisit weak domains identified through practice testing
If you want a structured week-by-week plan with more detail than the outline above, ACE-AO Study Guide 2026: How to Pass on Your First Attempt expands on this exact approach. And since the exam is closed-book and time-boxed, running realistic practice questions on our ACE-AO practice test platform before test day is one of the more reliable ways to confirm you can move through 100 questions within the 120-minute limit without rushing the later domains.
Retakes, Deadlines, and Staying Eligible
A few administrative details catch candidates off guard if they're not planned for in advance:
- One attempt is included with standard enrollment. If you don't pass, a retake costs $75.
- 26-month window: the exam must be taken within 26 months of enrollment, so procrastinating past that point means re-enrolling and paying again.
- Closed-book, proctored conditions: there's no reference material access during the exam, so all Part 139-based content needs to be exam-ready, not just familiar.
Timing your enrollment against when you can realistically dedicate 90+ days of study matters more than it might seem - enrolling too early relative to your available study time just burns into that 26-month clock. For a look at how testing windows and scheduling typically work, see ACE-AO Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Frequently Asked Questions
ACE-AO stands for Airport Certified Employee - Airfield Operations, a credential issued by the American Association of Airport Executives (AAAE). For more on the naming and how it fits into AAAE's broader ACE program, see What Does ACE-AO Stand For?
Standard enrollment is $555 for both members and non-members. A reduced student rate of $395 is available if you submit a current course schedule at registration. Enrollment covers electronic study modules and one exam attempt; a failed-exam retake costs $75.
You need 70% correct - 70 out of 100 questions - to pass. The exam is 100 multiple-choice questions administered over 120 minutes through TopClass with recorded remote proctoring.
No. The exam is closed-book. Candidates need a computer, webcam, microphone, and government-issued photo ID for the proctored session, and no reference materials are permitted during testing.
The exam must be taken within 26 months of enrollment. AAAE recommends at least 90 days of preparation, so most candidates plan their study timeline well within that window rather than waiting until close to the deadline.