- ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance, awarded by AAAE.
- The exam is 100 multiple-choice questions in 120 minutes, with a 70% (70 correct) passing score.
- Standard enrollment is $555; a $395 student rate is available with a current course schedule at registration.
- AAAE proctors the exam remotely through TopClass; it's closed-book with a webcam, mic, and photo ID required.
What ACE-ALM Actually Is
ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance. It is one of several specialty tracks under the broader Airport Certified Employee (ACE) program administered by the American Association of Airport Executives (AAAE). The "ALM" designation specifically identifies technicians and maintenance professionals whose job responsibilities center on the electrical systems that keep runway, taxiway, and approach lighting operating safely.
Unlike a general airport operations credential, ACE-ALM is narrowly focused on the electrical and maintenance knowledge required to keep airfield lighting circuits, regulators, and visual aids functioning to FAA standards. If you're just starting to research the acronym, our companion pages on what ACE-ALM is, ACE-ALM meaning, and what ACE-ALM stands for cover the terminology from slightly different angles if you want more context before diving into exam specifics.
Who Administers the Credential
The American Association of Airport Executives (AAAE) owns and administers the ACE-ALM designation. AAAE runs the enrollment process, publishes the electronic study modules, and delivers the exam itself through the TopClass platform. Membership in AAAE is optional - you do not need to be a member to enroll in ACE-ALM or sit for the exam, though members and non-members currently pay the same standard enrollment rate.
Because AAAE positions ACE-ALM as a technical, job-relevant credential rather than a purely academic one, the program leans on real-world references. Official review-course coverage points candidates toward FAA AC 150/5340-26C as a technical reference, which underscores that this certification is meant to reflect how airfield lighting systems are actually inspected and maintained in the field, not abstract theory.
What the Exam Covers
The ACE-ALM exam draws its content from the electrical and maintenance topics used in AAAE's official review course. If you want a full breakdown of how these areas are weighted and sequenced, see our ACE-ALM Exam Domains 2026 guide. At a high level, candidates need working familiarity with:
Electrical Fundamentals and Series Circuits
A large share of airfield lighting logic depends on series circuit behavior, since most lighting circuits are wired in series rather than parallel.
- Voltage, current, and resistance relationships in series lighting circuits
- How a single fault can affect an entire circuit loop
Constant-Current Regulators, Transformers, and Connectors
Constant-current regulators (CCRs) are the backbone of airfield lighting intensity control, and candidates must understand how they interact with series circuits and isolation transformers.
- How CCRs maintain consistent brightness across a lighting circuit
- Transformer function and proper connector maintenance
Light Sources, Fixtures, and Bolted Joints
This area covers the physical hardware technicians service in the field - lamps, fixtures, and the bolted joints that keep them secure and weatherproof.
- Common light source types used in runway and taxiway fixtures
- Proper torque and sealing practices for bolted joint connections
Signs, Visual Aids, and Approach Lighting
Beyond edge and centerline lighting, candidates are tested on the illuminated signage and approach lighting systems that guide pilots during low-visibility operations.
- Purpose and placement logic behind runway and taxiway signs
- Approach lighting system components and their role in visual guidance
Electrical Safety, Test Equipment, Standby Power, and Maintenance
The final cluster of topics ties the technical material back to day-to-day job performance.
- Safe work practices around energized airfield lighting circuits
- Use of test equipment for troubleshooting and verification
- Standby/backup power considerations and routine maintenance planning
Key Takeaway
Series circuit behavior and constant-current regulators sit at the core of ACE-ALM content - if you understand how a CCR maintains brightness across a series loop, most other topics build logically from that foundation.
Exam Format, Proctoring, and Scoring
The ACE-ALM exam consists of 100 multiple-choice questions delivered in a 120-minute window. To pass, candidates must answer at least 70% correctly - 70 out of 100 questions. There's no partial credit structure beyond that raw score threshold, so pacing matters: with 120 minutes for 100 questions, you have roughly a minute and change per question on average, though multiple-choice format means many questions can be answered faster than that once the underlying concepts are familiar.
AAAE delivers the exam remotely through the TopClass platform using recorded remote proctoring. That means:
- The exam is closed-book - no notes, manuals, or outside reference material
- You need a working computer, webcam, and microphone
- A government-issued photo ID is required to verify identity before the session begins
- The session is recorded as part of the proctoring process
For a detailed walkthrough of exactly what "passing" means and how the scoring threshold works, our ACE-ALM Passing Score breakdown goes deeper. And if you're weighing how demanding the exam actually feels in practice, How Hard Is the ACE-ALM Exam? addresses that directly.
Enrollment, Fees, and Timelines
Enrollment mechanics for ACE-ALM are straightforward but worth understanding before you commit money or time:
- Standard enrollment fee: $555 for both AAAE members and non-members
- Student rate: $395, available when a current course schedule is submitted at the time of registration
- What's included: electronic study modules and one exam attempt
- What costs extra: review courses and printed materials are not bundled into the base enrollment fee
- Retake fee: $75 if you don't pass on the first attempt
- Time limit: the exam must be taken within 26 months of enrollment
AAAE also recommends at least 90 days of preparation before sitting for the exam, though self-study is explicitly available as an option - you're not required to take a formal review course. For a full line-item cost picture, including how the student rate compares to standard enrollment, check our ACE-ALM Certification Cost breakdown.
| Enrollment Option | Fee | Eligibility Note |
|---|---|---|
| Standard Enrollment | $555 | Open to members and non-members |
| Student Rate | $395 | Requires current course schedule submitted at registration |
| Failed Exam Retake | $75 | Applies after an unsuccessful attempt |
Key Takeaway
Your enrollment fee buys electronic study modules and exactly one exam attempt - budget for the $75 retake fee separately if you're not fully confident going in.
Who Pursues This Certification
ACE-ALM is built for people already working in or entering airfield electrical maintenance roles - the technicians and supervisors responsible for runway edge lights, taxiway centerline lighting, constant-current regulators, and the electrical vaults that support them. Airports, airport authorities, and the contractors that service airfield lighting systems tend to be the environments where this credential is relevant.
Because eligibility and prerequisites can shape whether ACE-ALM makes sense for your current stage of experience, it's worth reviewing our ACE-ALM Requirements guide before enrolling. If you're evaluating whether the credential is a smart investment relative to the enrollment and prep time involved, Is ACE-ALM Certification Worth It? lays out that analysis, and our ACE-ALM Salary Guide looks at how the credential connects to compensation in maintenance and technician roles. For a sense of where employers actively look for ACE-ALM holders, see ACE-ALM Jobs.
How Candidates Prepare
Because ACE-ALM covers a defined, technical body of knowledge rather than broad conceptual material, the most effective preparation tends to be sequential - moving through electrical fundamentals before layering on system-specific topics like regulators, fixtures, and visual aids. AAAE's recommendation of at least 90 days gives enough runway to do this without cramming.
Electrical Fundamentals and Series Circuits
- Build fluency with series circuit math before moving to CCRs, since regulator behavior only makes sense once series logic is solid
Constant-Current Regulators, Transformers, Connectors
- Study how CCRs regulate brightness across a loop and how transformers/connectors fit into that circuit path
Fixtures, Light Sources, Signs, and Visual Aids
- Focus on hardware identification, bolted joint maintenance, and how signage and approach lighting support pilot visual guidance
Safety, Test Equipment, Standby Power, and Review
- Cover electrical safety practices and test equipment use, then run full-length practice sessions under timed, closed-book conditions
Timed practice matters here because the real exam is closed-book with recorded remote proctoring - there's no fallback to notes mid-test. Rehearsing under the same 120-minute, 100-question constraint helps you calibrate pacing before it counts. Our ACE-ALM Study Guide 2026 expands on this sequencing with more detail on first-attempt strategy, and our ACE-ALM Cheat Sheet condenses the must-know facts into a single reference page for final review. You can also work through realistic scored questions on our practice test platform to see how your recall holds up under exam-style conditions before you commit to a test date.
Key Takeaway
Sequence your study to match circuit logic - fundamentals and series circuits first, then regulators, then hardware and visual aids - rather than jumping randomly between topics.
Timing your enrollment also matters strategically. Since the exam must be taken within 26 months of enrollment, and AAAE runs the exam on a testing calendar rather than on-demand every single day, it's worth checking our ACE-ALM Exam Dates guide before you lock in a 90-day (or longer) study plan, so your prep timeline lines up with an actual available testing window. Running a few full-length sets on a practice test site in the final two weeks before your scheduled date is a reasonable way to confirm readiness without over-studying material you've already mastered.
Frequently Asked Questions
ACE-ALM stands for Airport Certified Employee - Airfield Lighting Maintenance, a specialty designation under AAAE's Airport Certified Employee program.
The American Association of Airport Executives (AAAE) administers ACE-ALM, including enrollment, study modules, and the exam itself, which is delivered through the TopClass platform with recorded remote proctoring.
The exam has 100 multiple-choice questions with a 120-minute time limit, and you need to answer at least 70 of them correctly (70%) to pass.
Standard enrollment is $555 for both members and non-members. A $395 student rate is available if you submit a current course schedule at registration. Enrollment covers electronic study modules and one exam attempt; review courses and printed materials are extra.
You can retake the exam for a $75 fee. You also have up to 26 months from your original enrollment date to complete the exam.