- You need 70 correct answers out of 100 questions to pass the ACE-ALM exam.
- The exam is 120 minutes, multiple-choice, closed-book, and delivered via TopClass remote proctoring.
- AAAE recommends at least 90 days of preparation before sitting the exam.
- A failed attempt costs $75 to retake - plan your first sitting carefully.
The Passing Score, Exactly
If you're preparing for the Airport Certified Employee - Airfield Lighting Maintenance credential, the number that matters most is simple: 70%. Out of 100 multiple-choice questions, you need to answer 70 correctly to earn the ACE-ALM designation from the American Association of Airport Executives (AAAE). There's no curve, no domain-by-domain minimum, and no partial credit for close answers - it's a flat, total-score threshold applied across the entire exam.
That simplicity is actually good news for candidates. You don't need to hit an arbitrary percentage in "electrical safety" while falling short in "constant-current regulators." You just need 70 correct answers anywhere across the exam. This changes how you should allocate study time, which we'll cover in the sections below.
Exam Format That Produces That Number
The 70% threshold only makes sense once you understand the format it's attached to. The ACE-ALM exam is:
- 100 multiple-choice questions covering the full scope of airfield lighting maintenance knowledge
- 120 minutes in length, timed and monitored
- Closed-book - no notes, manuals, or reference sheets during the test
- Delivered through TopClass with recorded remote proctoring, meaning you'll need a working computer, webcam, microphone, and a government-issued photo ID before you're allowed to start
Because the exam is closed-book and remotely proctored, there's zero room for improvising with a reference document mid-test. Everything you know about series circuits, transformers, or standby power has to already be in your head. If you want a full walkthrough of what test day actually looks like - proctoring checks, ID verification, environment requirements - see the ACE-ALM Exam Dates 2026 guide for scheduling windows and logistics.
Key Takeaway
Because this is a flat 70% cutoff with no domain minimums, spend extra time on your weakest content areas rather than spreading effort evenly - a few extra correct answers in your worst domain can offset near-misses elsewhere.
What 70% Actually Means for Preparation
A 70% passing score sounds achievable, and it is - but only if your preparation matches the exam's actual content. AAAE recommends candidates spend at least 90 days preparing before sitting for the exam, and that timeframe exists for a reason: airfield lighting maintenance draws on a mix of electrical theory, FAA-specific standards, and hands-on maintenance knowledge that doesn't compress well into a weekend cram session.
Missing 30 questions is easier than it sounds when the material spans everything from basic electrical fundamentals to the specifics of FAA AC 150/5340-26C. Candidates who treat this as "just an electrician's test" often underestimate the visual aids, signage, and approach lighting sections, while candidates who only study visual aids get caught out on constant-current regulator math. For a deeper breakdown of where people typically lose points, the How Hard Is the ACE-ALM Exam? Complete Difficulty Guide 2026 article is worth reading before you set your target exam date.
Content Areas Behind the Questions
The ACE-ALM review course - and by extension, the exam itself - covers a defined set of technical content areas. Understanding how these map to the 70-question passing bar helps you prioritize.
Electrical Fundamentals & Series Circuits
Foundational knowledge that underpins nearly every other topic on the exam. Weakness here tends to cascade into missed questions on regulators and transformers too.
- Ohm's law application in airfield lighting circuits
- Series circuit behavior and troubleshooting logic
Constant-Current Regulators, Transformers & Connectors
Heavily tested equipment-specific content. Expect scenario-based questions about how these components behave under fault conditions.
- Regulator step settings and current output
- Isolation transformer function and failure modes
Light Sources, Fixtures, Bolted Joints & Signs
Practical, field-relevant material covering the physical hardware technicians maintain daily.
- Fixture types used on runways and taxiways
- Proper torque and connection practices for bolted joints
Visual Aids, Approach Lighting & Electrical Safety
Safety-critical content that examiners weight heavily because errors in these areas have real operational consequences.
- Approach lighting system configurations
- Lockout/tagout and other electrical safety protocols
Test Equipment, Standby Power & Maintenance
Operational knowledge tying the technical content together into day-to-day maintenance practice.
- Using test equipment to diagnose circuit issues
- Standby/emergency power system requirements
For a complete, structured look at how each of these areas is typically weighted and tested, the ACE-ALM Exam Domains 2026: Complete Guide to All Content Areas article breaks down every topic in more depth than we can cover here.
Registration Mechanics That Affect Your Score
The passing score doesn't exist in isolation - it's tied to registration details that affect how many chances you get to hit it. Standard enrollment runs $555 for members and non-members alike, while a student rate of $395 is available if you submit a current course schedule at registration. Either way, enrollment includes electronic study modules and one exam attempt. Review courses and printed materials are separate purchases.
Membership in AAAE is optional - you don't need to join the association to enroll in the ACE-ALM program. But once you enroll, you're on the clock: the exam must be taken within 26 months of enrollment. That's a generous window, but it also means procrastination has a hard deadline attached to it.
For the full breakdown of what's included at each price point and what add-ons cost extra, see the ACE-ALM Certification Cost 2026: Complete Pricing Breakdown guide.
| Item | Detail |
|---|---|
| Standard enrollment fee | $555 |
| Student rate | $395 (requires current course schedule at registration) |
| What's included | Electronic study modules + one exam attempt |
| Passing score | 70% (70 of 100 questions correct) |
| Exam length | 120 minutes, closed-book, remotely proctored via TopClass |
| Retake fee (if failed) | $75 |
| Enrollment window | Exam must be taken within 26 months of enrollment |
The Retake Math
Because one exam attempt is bundled into enrollment, missing the 70% mark means paying a $75 retake fee for another try. That's not a large sum compared to the enrollment cost, but it's real money and real time - and it means you'll need to schedule another remote-proctored session, complete the ID verification process again, and wait for a new slot.
The practical implication: it's almost always cheaper and faster to add another few weeks of focused study before your first attempt than to bank on "trying again" as your strategy. If you're weighing whether the investment is worth making carefully the first time, the Is the ACE-ALM Certification Worth It? Complete ROI Analysis 2026 article puts the fees and effort in context against the career payoff.
Key Takeaway
Treat the $75 retake fee as a budget item to avoid, not a safety net to rely on. Aim to walk into your first attempt already scoring above 70% on practice questions.
A Timeline Built Around the 70% Bar
AAAE's recommended 90-day minimum preparation window gives you enough room to build knowledge in layers rather than cramming. Here's a way to structure it that's specific to how the ACE-ALM content is organized, rather than a generic weekly template.
Electrical Fundamentals & Series Circuits
- Build (or rebuild) comfort with Ohm's law, series circuit behavior, and basic troubleshooting logic
- This foundation determines how easily you absorb regulator and transformer material later
Regulators, Transformers, Connectors & Fixtures
- Study constant-current regulator operation and step settings
- Work through fixture types, bolted joint practices, and connector failure scenarios
Visual Aids, Signs, Approach Lighting & Safety
- Map out approach lighting configurations and visual aid standards
- Review electrical safety protocols until they're automatic, not memorized
Test Equipment, Standby Power, Maintenance & Full Review
- Practice diagnosing circuit issues using standard test equipment scenarios
- Run full-length timed practice tests to simulate the 120-minute, 100-question format
If you want a condensed reference to keep nearby during this final review phase, the ACE-ALM Cheat Sheet 2026: One-Page Review of Must-Know Facts is designed exactly for that purpose. And for a step-by-step preparation framework that goes beyond timing, the ACE-ALM Study Guide 2026: How to Pass on Your First Attempt covers resource selection and practice strategy in more detail.
Common Mistakes That Push People Below 70
A handful of avoidable errors show up repeatedly among candidates who fall short of the passing score:
- Studying hardware but skipping theory. Fixtures and connectors are tangible and easy to picture, but electrical fundamentals questions are just as common and easy to lose points on if skipped.
- Ignoring the reference standard. FAA AC 150/5340-26C terminology shows up in question wording. Skimming it once isn't the same as knowing it.
- Underestimating the clock. 120 minutes for 100 questions is workable, but only if you're not stalling on unfamiliar terminology mid-exam. Timed practice under real conditions matters.
- Not simulating the proctoring environment. Candidates sometimes lose focus adjusting to webcam monitoring and ID checks on test day itself - factor that adjustment period into your mental preparation, not just your content review.
- Treating "closed-book" loosely during practice. If you study with references open the whole time, you won't know your true recall ability until it's too late.
Running realistic practice sessions - timed, closed-book, full-length - on our practice test platform is one of the most direct ways to find out where you stand relative to that 70-question threshold before it counts. It's worth doing several passes through full practice exams in the final weeks so the format itself stops being a variable on test day.
FAQ
You need to answer 70 out of 100 multiple-choice questions correctly, which equals a 70% passing score. There are no separate minimums by content area.
You have 120 minutes to complete all 100 questions. The exam is closed-book and administered through TopClass with recorded remote proctoring.
You can retake it for a $75 fee. Enrollment includes only one exam attempt, so a failed attempt requires paying the retake fee to schedule another sitting, within your 26-month enrollment window.
AAAE recommends at least 90 days of self-study preparation. Given the breadth of content - from electrical fundamentals through standby power and maintenance - most candidates benefit from using the full recommended window rather than compressing it.
No. Membership is optional. Standard enrollment is $555 for members and non-members alike, or $395 at the student rate with a current course schedule submitted at registration.
A computer, webcam, microphone, and government-issued photo ID are required for the remotely proctored exam through TopClass. Review the ACE-ALM Requirements 2026 guide for full eligibility and logistics details before scheduling.