- ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance, issued by AAAE.
- The exam is 100 multiple-choice questions in 120 minutes, with a passing score of 70%.
- Standard enrollment is $555; a $395 student rate is available with proof of a current course schedule.
- Enrollment includes electronic study modules and one exam attempt; a failed attempt costs $75 to retake.
What ACE-ALM Actually Stands For
ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance. It is one of several "ACE" designations built around specific airport job functions, and the "ALM" suffix is what narrows it down to the people responsible for keeping runway, taxiway, approach, and signage lighting systems functioning and compliant. If you have landed on this page because you saw the acronym elsewhere and want a straight answer, that is it: this is not a general aviation credential, and it is not a pilot or dispatcher qualification. It is a maintenance-focused designation tied directly to the electrical systems that guide aircraft on the ground.
Because "ACE-ALM" is a compact acronym, it occasionally gets confused with unrelated credentials that share the same letters in other industries. On this site, and throughout this article, ACE-ALM refers exclusively to the airfield lighting maintenance designation described below. For a broader breakdown of the name itself, see ACE-ALM Meaning and What Does ACE-ALM Stand For?.
Who Issues the ACE-ALM Designation
The American Association of Airport Executives (AAAE) is the organization behind ACE-ALM. AAAE runs a family of ACE designations, and the ALM track is specifically built for personnel who maintain, troubleshoot, and repair airfield lighting infrastructure. Membership in AAAE is optional - you do not need to be a dues-paying member to enroll or sit for the exam, though membership status can affect pricing on other AAAE products.
Enrollment gives candidates electronic study modules and one exam attempt bundled together. Review courses and printed materials are sold separately, so candidates who want instructor-led review or a physical binder of reference material should budget for that as an add-on rather than assuming it is included. If you want the full picture of what's bundled versus what costs extra, the ACE-ALM Certification Cost 2026: Complete Pricing Breakdown guide walks through every line item.
What the Exam Looks Like
The ACE-ALM exam is a 100-question, multiple-choice test with a 120-minute time limit. That works out to a little over a minute per question on average, which is workable but leaves little room for second-guessing every item. A candidate needs 70 correct answers - a 70% score - to pass.
The exam is delivered through AAAE's TopClass platform using recorded remote proctoring. That means you can test from a location of your choosing, but the session is monitored and recorded, and you'll need:
- A computer with a working webcam and microphone
- A stable internet connection for the duration of the 120-minute window
- A government-issued photo ID for identity verification
- A quiet, closed-book environment - no notes, reference material, or outside assistance
Because the exam is closed-book, memorization and applied understanding matter more than the ability to look things up. For a deeper breakdown of what makes the format challenging (or manageable), see How Hard Is the ACE-ALM Exam? Complete Difficulty Guide 2026, and for the exact scoring mechanics, ACE-ALM Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
You get one exam attempt with standard enrollment. If you fail, a retake costs $75 rather than requiring you to re-enroll at the full rate - plan your first attempt seriously, but know the retake path is affordable if needed.
The Technical Content Behind the Letters
The "ALM" in ACE-ALM is not a vague label - it maps to a defined body of technical content that AAAE's official review course covers. Understanding these topic areas is the fastest way to understand what the certification actually verifies about a person's knowledge:
Electrical Fundamentals & Series Circuits
Foundational electrical theory as applied to the series-circuit design used throughout airfield lighting systems.
- Understanding voltage, current, and resistance behavior in series configurations
Constant-Current Regulators (CCRs)
CCRs are the backbone of airfield lighting circuits, maintaining stable current across a string of lights regardless of load changes.
- Regulator operation, adjustment, and troubleshooting
Transformers, Connectors, and Light Sources
Isolation transformers and field connectors are common failure points; light source technology (including legacy and modern fixtures) rounds out this area.
- Connector installation practices and common failure modes
Fixtures, Bolted Joints, and Signs
Physical installation and mechanical integrity of fixtures and signage, including bolted-joint torque and corrosion considerations.
- Sign lighting and visual aid mounting standards
Visual Aids and Approach Lighting
Systems that guide pilots during approach and landing, including the layout and function of approach lighting arrays.
- Recognizing standard configurations and their purpose
Electrical Safety, Test Equipment, and Standby Power
Safe work practices around high-voltage series circuits, correct use of test equipment, and standby/backup power systems that keep lighting operational during outages.
- Lockout/tagout and megger testing practices
Maintenance
Preventive and corrective maintenance practices that tie the other domains together into day-to-day airfield operations.
- Inspection cycles and troubleshooting workflows
These topic areas also align with FAA Advisory Circular AC 150/5340-26C, which AAAE names as a technical reference for the program. For a full breakdown of how these areas are weighted and tested, see the ACE-ALM Exam Domains 2026: Complete Guide to All 0 Content Areas, and for a condensed reference sheet once you've studied the material, check the ACE-ALM Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Enrollment, Fees, and Timing
Understanding the "ACE-ALM" name also means understanding how enrollment actually works, since the designation is earned through a specific process rather than a one-time test purchase.
| Item | Detail |
|---|---|
| Standard enrollment (members & non-members) | $555 |
| Student rate | $395 (requires current course schedule at registration) |
| What's included | Electronic study modules + one exam attempt |
| Not included | Review courses, printed materials (extra cost) |
| Retake fee (after a failed attempt) | $75 |
| Time limit to sit exam | 26 months from enrollment |
| Recommended prep time | At least 90 days (per AAAE) |
This structure matters for planning purposes: enrolling does not lock you into a rigid testing date, but it does start a 26-month clock. AAAE's own guidance suggests at least 90 days of preparation before sitting the exam, which lines up with treating this as a serious technical certification rather than something to cram for over a weekend. Full details on registration mechanics and deadlines live in ACE-ALM Requirements 2026: Eligibility, Prerequisites & How to Qualify and ACE-ALM Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Who Actually Earns This Certification
Because ACE-ALM sits squarely in the airfield maintenance function, the people who pursue it tend to be airport electricians, airfield maintenance technicians, and supervisors responsible for lighting systems, constant-current regulators, and visual aid infrastructure at commercial and general aviation airports. It is also common among maintenance staff looking to formalize experience they already have on the job, since the exam draws heavily on practical electrical and mechanical knowledge rather than abstract theory alone.
Airport operations departments, airfield electrical shops, and third-party maintenance contractors are the typical employers who value this designation, since it maps directly to responsibilities already defined by FAA guidance for airfield lighting. If you're weighing whether this credential fits your career path, ACE-ALM Jobs and Is the ACE-ALM Certification Worth It? Complete ROI Analysis 2026 go into more depth on where the designation is actually used and valued.
Key Takeaway
ACE-ALM is a maintenance-side credential - it verifies knowledge of the electrical and mechanical systems behind airfield lighting, not general airport operations or administrative knowledge.
How the Preparation Timeline Maps to the Letters
Once you understand what ACE-ALM actually covers, preparation stops being generic "exam study" and becomes a matter of sequencing the technical domains in a sensible order. AAAE's 90-day recommendation gives a natural framework: early weeks for foundational electrical theory, middle weeks for the equipment-specific content (CCRs, transformers, connectors, fixtures), and final weeks for safety, test equipment, and maintenance practices that tie everything together.
Electrical Fundamentals & Series Circuits
- Build the base: voltage/current behavior in series circuits used across airfield lighting
CCRs, Transformers, Connectors, Light Sources
- Focus on equipment identification, function, and common failure points
Fixtures, Signs, Visual Aids, Approach Lighting
- Study physical installation standards and visual aid configurations
Safety, Test Equipment, Standby Power, Maintenance
- Close with practices that connect all prior domains into daily operations
This is a starting framework, not a rigid rulebook - some candidates with hands-on experience in certain domains will need less time there and more elsewhere. For a fully worked-out study plan and pacing strategy, see the ACE-ALM Study Guide 2026: How to Pass on Your First Attempt. Running through timed practice questions on our ACE-ALM practice test platform is one of the most direct ways to confirm which domains still need work before exam day.
Frequently Asked Questions
ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance, a designation issued by the American Association of Airport Executives (AAAE) for professionals who maintain airfield lighting systems.
No. On this site, ACE-ALM refers exclusively to AAAE's Airfield Lighting Maintenance designation. Other industries may use the same three letters for unrelated credentials, but the facts, fees, and exam structure described here apply only to the AAAE program.
The exam has 100 multiple-choice questions with a 120-minute time limit. A passing score is 70%, meaning 70 correct answers out of 100.
Standard enrollment is $555 for both members and non-members. A $395 student rate is available for those who submit a current course schedule at registration. Enrollment includes electronic study modules and one exam attempt; a failed-exam retake costs $75.
AAAE administers the exam through the TopClass platform using recorded remote proctoring. It is closed-book and requires a computer, webcam, microphone, and a government-issued photo ID.