ACE-AO Pass Rate 2026: What the Data Shows

The Real Number: What AAAE Actually Publishes

If you searched "ACE-AO pass rate 2026" hoping for a single percentage to anchor your prep plan around, here's the honest answer: the American Association of Airport Executives (AAAE), which administers the Airport Certified Employee - Airfield Operations credential, does not publish an official pass-rate statistic for this exam. That's a meaningful distinction, because several unrelated certifications also use the "ACE-AO" acronym, and some of those programs do publish pass-rate figures that get repeated online as if they applied here. They don't. Anything you read claiming a specific ACE-AO pass percentage should be treated with suspicion unless it's sourced directly to AAAE.

What AAAE does publish - and what actually matters for your preparation - is the exam's structural data: question count, time limit, passing score, and retake cost. Those numbers are far more useful than a headline pass rate anyway, because they tell you exactly what you need to hit, not just how other candidates historically performed. For a full walkthrough of what "passing" technically requires, see our ACE-AO Passing Score breakdown.

Passing Score Mechanics: The 70-out-of-100 Threshold

The ACE-AO exam consists of 100 multiple-choice questions, delivered in a 120-minute closed-book session. To pass, you need 70 correct answers - a 70% threshold that doesn't move based on curve, cohort, or difficulty of the specific question set you draw. This is a fixed-criterion exam, not a norm-referenced one, which is actually good news for planning: your job is to consistently answer 7 out of every 10 questions correctly across all content areas, not to outperform a shifting peer average.

The exam is administered remotely through TopClass with recorded proctoring, meaning you'll need a functioning webcam, microphone, stable computer setup, and a government-issued photo ID at the time of testing. There is no open-book leeway - every answer needs to come from what you've actually retained. Because of the closed-book, timed format, pacing matters almost as much as knowledge: 120 minutes for 100 questions gives you roughly 72 seconds per question, which is workable if you know the material but punishing if you're second-guessing every airfield lighting or NOTAM-related item.

What Actually Affects Your Odds of Passing

Without a published pass rate to lean on, it's more productive to look at the structural factors AAAE has built into the program - because these are the levers that actually influence whether an individual candidate passes.

• Preparation time: AAAE recommends at least 90 days of study before sitting the exam. This isn't arbitrary - the curriculum spans a wide swath of Part 139 operational material, and compressing that into a few weeks tends to produce shallow recall rather than working knowledge.
• Retake cost as a deterrent to guessing: A failed attempt triggers a $75 retake fee. That's not devastating, but it's real money and lost time, which is reason enough to prepare as if you only get one shot.
• Enrollment includes exactly one attempt: Your $555 (or $395 student-rate) enrollment covers the electronic study modules and a single exam attempt. Any subsequent attempt requires the retake fee. This changes the math on how much "extra" prep - like the optional Blank Slate flashcard app - might be worth for your specific situation.
• Breadth of the curriculum: The exam draws from a genuinely wide content base under Part 139. Candidates who study narrowly (say, focusing only on wildlife hazard management or only on ARFF) tend to get caught out by questions on records and personnel requirements or airport condition reporting.

For a deeper look at how these factors combine to make the exam feel harder or easier than expected, our ACE-AO difficulty guide breaks down candidate experience in more detail.

The Content Areas That Decide the Outcome

The ACE-AO exam is built on a Part 139-based curriculum, and understanding its scope is the single best substitute for a pass-rate statistic. If you know what's being tested, you can estimate your own readiness far more accurately than any published percentage could tell you.

Our ACE-AO exam domains guide goes topic-by-topic in more depth if you want to map your study hours against the full content list before you build a schedule.

Registration Mechanics and the Cost of a Retake

Understanding the money and timing behind ACE-AO helps you plan your attempt strategically rather than reactively. Standard enrollment is $555 for members and non-members alike (membership in AAAE is optional and doesn't change the price), while a student rate of $395 is available with a current course schedule submitted at registration. That enrollment fee covers electronic study modules and one exam attempt - review courses and printed materials are separate purchases.

If you don't pass on the first try, the retake fee is $75 - modest compared to the initial enrollment, but still a cost worth avoiding through solid preparation rather than treating the exam as a low-stakes trial run. You also have a hard deadline to keep in mind: the exam must be taken within 26 months of enrollment, so procrastination has a real expiration date attached to it. For the complete fee breakdown, including optional add-ons like the $150 Blank Slate flashcard app (90 days of access), see our ACE-AO certification cost guide.

Who Sits This Exam - and Why It Matters for Your Prep

ACE-AO candidates are typically airport operations professionals working toward, or already performing, Part 139 compliance duties - airfield operations specialists, duty managers, safety coordinators, and staff responsible for self-inspections, wildlife hazard management, or airport condition reporting at certificated airports. If you're new to the field and wondering what the letters even represent before diving into pass-rate mechanics, our What Is ACE-AO? and ACE-AO Meaning primers cover the basics, while ACE-AO Requirements lays out eligibility specifics.

Because the candidate pool skews toward people already working airfield operations, the exam assumes a baseline of on-the-job exposure to Part 139 concepts. That's precisely why generic multiple-choice test-taking advice only goes so far here - the questions are written for people who've seen an ACM, walked a self-inspection route, or filed an airport condition report, even if only briefly. If you're studying without that operational exposure, budget extra time on the domains covering records/personnel, self-inspections, and SMS, since those areas assume familiarity that classroom-only candidates often lack. If you're researching the credential for career purposes rather than an upcoming exam date, our ACE-AO Jobs overview and ACE-AO Salary Guide connect the certification to real hiring context.

A Study Timeline That Matches the 26-Month Clock

Generic study techniques - spaced repetition, timed practice blocks - only help if they're mapped onto the actual ACE-AO content structure. Given AAAE's 90-day minimum recommendation, here's how that window maps onto the domains that matter most.

For a structured breakdown of exactly which materials to use during each stretch, our ACE-AO Study Guide walks through a first-attempt strategy in more depth, and running full practice sets on our ACE-AO practice test platform is one of the few ways to simulate the actual 120-minute, 100-question pressure before test day. A quick ACE-AO cheat sheet review in your final week can also help consolidate scattered facts across all these domains.

Frequently Asked Questions