The Reality of AME Exam Pass Rates in Canada

Every aspiring Aircraft Maintenance Engineer asks the same question: how hard are the exams really? The honest answer is that Transport Canada AME exams are designed to be challenging — and the pass rates reflect that. While Transport Canada does not publish official, itemized pass rates for each individual exam, data gathered from AME training programs, college feedback, and industry surveys reveals clear patterns about which exams are the toughest and where candidates tend to struggle most.

Understanding these statistics is not just about satisfying curiosity. Knowing which exams have the lowest pass rates allows you to allocate your study time strategically, focus your preparation efforts where they matter most, and avoid the common mistakes that cause first-time failures. This guide compiles the best available data on AME exam pass rates across all six written exams — CARS, STD, AF, PP, EA, and HF — and provides actionable strategies to put the odds in your favour.

Estimated Pass Rates by Exam

Based on data collected from Canadian AME training institutions, college aviation maintenance programs (including BCIT, SAIT, Centennial College, and Canadore College), and online AME communities, the estimated first-attempt pass rates for Transport Canada written exams are as follows:

Exam	Code	Est. First-Attempt Pass Rate	Difficulty Rating
Canadian Aviation Regulations	CARS	~60–65%	High
Standard Practices	STD	~75–80%	Moderate
Airframe	AF	~65–70%	Moderate–High
Powerplant	PP	~60–68%	High
Electrical / Avionics	EA	~55–62%	Very High
Human Factors	HF	~80–85%	Low–Moderate

Note: These figures are estimates compiled from multiple AME training program surveys and online candidate reports. Transport Canada does not release official exam-by-exam pass rate data. Individual results vary by preparation method, background, and region.

Exam-by-Exam Breakdown

CARS Exam (Canadian Aviation Regulations) — ~60–65% Pass Rate

The CARS exam consistently shows one of the lowest pass rates among the AME written tests. This is because regulatory knowledge requires a fundamentally different approach to study than the technical exams. Rather than understanding how a system works, you must memorize precise legal language, regulation numbers, and the relationships between different parts of the Canadian Aviation Regulations. Many candidates underestimate the level of detail required. The exam heavily tests CAR 625 (Maintenance Requirements) and CAR 571 (Maintenance Releases), which together account for roughly 40% of the questions. Candidates who focus on understanding the regulatory framework rather than rote memorization tend to perform significantly better.

For a complete walkthrough of the CARS exam, read our CARS exam guide.

STD Exam (Standard Practices) — ~75–80% Pass Rate

The Standard Practices exam covers the foundational skills every AME must master: precision measurement, fasteners, torque values, corrosion control, cleaning, lubrication, and safety wiring. Because much of this content is taught thoroughly in college programs and during apprenticeship, the pass rate is higher than average. However, candidates who struggle with the STD exam often do so because they focus too narrowly on one aspect (e.g., torque values) and neglect the breadth of other standard practices topics. The key to success on the STD exam is systematic coverage of all the sub-topics outlined in the TP14038E syllabus.

AF Exam (Airframe Structures) — ~65–70% Pass Rate

The Airframe exam tests knowledge of aircraft structural components, sheet metal repair, welding, composite materials, hydraulic systems, landing gear, and flight controls. The moderate-to-high difficulty comes from the sheer breadth of the subject matter. Airframe technology varies enormously between aircraft types — a small general aviation aircraft has very different structural systems than a large transport-category jet. The exam tests general airframe knowledge applicable to both, which means candidates must be comfortable with diverse topics from fabric covering to advanced composite repair techniques. Weakness in hydraulic systems and flight control rigging is a common failure pattern.

PP Exam (Powerplant / Propulsion) — ~60–68% Pass Rate

The Powerplant exam is widely regarded as one of the hardest AME exams, with pass rates comparable to the CARS exam. The exam covers reciprocating and turbine engine theory, fuel systems, ignition systems, lubrication, propellers, and engine instrument systems. The challenge is the depth of technical detail required — you need to understand not just how an engine works, but the specific tolerances, inspection intervals, and troubleshooting procedures. Turbine engine questions are particularly difficult for candidates who trained primarily on reciprocating engines, and vice versa. Successful candidates report spending 40–50% more study time on the PP exam than on mid-difficulty exams like STD.

EA Exam (Electrical / Avionics) — ~55–62% Pass Rate

The Electrical and Avionics exam has the lowest estimated pass rate of all six AME written exams. This is the exam that causes the most first-time failures, particularly among candidates who do not have a strong background in electrical theory. The exam covers DC and AC circuits, motors and generators, batteries, wiring and connectors, avionics systems (communication, navigation, radar), instrument systems, and autopilots. The wide range of topics combined with the mathematical nature of circuit analysis makes this exam uniquely challenging. Many candidates report that the EA exam requires the most practice questions — typically 500+ — to feel fully prepared. Understanding complex circuit diagrams under time pressure is a skill that develops only through repeated practice.

HF Exam (Human Factors) — ~80–85% Pass Rate

The Human Factors exam has the highest pass rate of all the AME written exams, typically exceeding 80% on the first attempt. This is partly because the content is more intuitive — topics like fatigue management, communication, decision-making, and error management are grounded in everyday experience. The exam is based on Transport Canada's TP14237E syllabus, and the material is more conceptual than technical. However, candidates should not be complacent. While the pass rate is high, the exam does contain scenario-based questions that require careful reading. The most common mistakes come from rushing through questions that seem "obvious" based on common sense rather than applying the specific human factors model or framework being tested. Understanding the Dirty Dozen and the PEAR model thoroughly is essential.

Why Do Candidates Fail? Common Failure Patterns

Understanding why candidates fail is just as important as knowing what to study. Across all six exams, several recurring failure patterns emerge:

Underestimating question depth — Many candidates assume TC exams test surface-level knowledge. In reality, questions often require applying multiple concepts to a single scenario. A typical CARS question might ask you to determine which regulation applies in a situation involving both maintenance scheduling and technical records.
Insufficient practice volume — Candidates who attempt fewer than 300 practice questions per exam before their test date have significantly higher failure rates, according to training program data. The EA exam typically requires the most practice, while HF requires the least.
Poor time management — Each exam has a time limit (typically 90 minutes for 50 questions). Candidates who spend too long on difficult questions early in the exam often run out of time for questions they could have answered correctly later.
Overconfidence in known topics — Candidates who work professionally in one area (e.g., a mechanic specializing in engines) sometimes assume the PP exam will be easy — and then fail because the exam covers topics outside their day-to-day experience.
Ignoring the official syllabus — The TP14038E syllabus documents published by Transport Canada specify exactly which topics are covered in each exam. Candidates who study from generic materials rather than aligning their preparation with the syllabus often miss entire topic areas.
Not using adaptive practice tools — Traditional study methods (reading textbooks, reviewing notes) are passive. Active practice with adaptive difficulty that targets your weak areas is significantly more effective for exam preparation.

How Exam Difficulty Affects Licensing Timelines

The pass rates directly impact how long it takes to complete all six exams. Transport Canada allows you to write exams in any order, and most candidates take 6–18 months to pass all six. However, candidates who fail one or more exams on their first attempt can face significant delays because of the 30-day wait period before retaking a failed exam. In practice, failing even one exam can add 1–3 months to your licensing timeline depending on scheduling availability at Transport Canada-approved testing centres.

The most efficient strategy is to attempt the hardest exams (EA, CARS, PP) when you are most prepared and have the most study time available. Many successful candidates schedule these exams early in their preparation journey, leaving the easier exams (HF, STD) for when they have less intensive study time available. For a complete guide to structuring your study schedule, see our AME exam study plan guide.

Tips to Beat the Averages

While the statistics may seem daunting, thousands of candidates pass these exams every year. Here is what the most successful candidates do differently:

Start early and study consistently — Cramming is the number one cause of failure. The human brain learns best through spaced repetition — studying for 45–60 minutes daily over 8–12 weeks is far more effective than 6-hour sessions on weekends. Sky Licence's AI-powered platform uses spaced repetition algorithms to optimize your study schedule automatically.
Use adaptive difficulty practice — Instead of studying linearly, start with easier questions to build foundational knowledge and let the system progressively challenge you with harder questions as your confidence grows. This approach, used by Sky Licence, ensures you are always studying at the edge of your ability — the zone where learning is most efficient.
Simulate real exam conditions — Before your exam date, complete at least 3–5 full-length timed mock exams. This builds exam-day stamina, teaches you to manage time under pressure, and reveals which question formats you find most challenging. Sky Licence's exam simulator replicates the actual TC testing environment.
Analyze your mistakes — Every wrong answer is a learning opportunity. The most effective candidates spend as much time reviewing their mistakes as they do answering new questions. Detailed answer explanations that explain not just why the correct answer is right, but why each wrong option is wrong, accelerate this learning process dramatically.
Focus on your weakest exam first — If pass rate data shows EA is the toughest exam, do not save it for last. Tackle your hardest exam when your motivation and study momentum are highest. The confidence boost from passing a hard exam will carry you through the rest.
Join a community of candidates — Studying in isolation is harder than studying with peers. Engaging with other AME candidates through forums, study groups, or social media communities helps you discover new perspectives, clarify confusing topics, and stay motivated.

How Sky Licence Improves Your Chances

Sky Licence was built specifically for Transport Canada AME exams. Unlike generic quiz apps or outdated question banks, Sky Licence's AI-powered platform is tailored to the exact TP14038E syllabus. Here is how it helps you beat the averages:

AI-powered adaptive difficulty — The platform continuously assesses your performance and adjusts question difficulty in real-time. If you are strong on electrical theory but weak on wiring diagrams, you will see more wiring questions until you reach mastery.
Syllabus-aligned question bank — Every question maps directly to a specific topic in the Transport Canada TP14038E syllabus. You can track your coverage progress and identify gaps immediately.
Detailed explanations — Each question includes a thorough explanation of why each answer option is correct or incorrect, turning every practice session into a learning session.
Performance analytics — See your pass rate by exam, by topic, and by question type. Identify exactly where you need more practice at a glance.
Timed mock exams — Simulate the real exam experience with adjustable time limits and question counts that match the actual Transport Canada format.

Start your AME exam preparation with Sky Licence →

Frequently Asked Questions

Does Transport Canada publish official pass rates?

No, Transport Canada does not publicly release itemized pass rate data for individual AME written exams. The figures cited in this article are estimates compiled from AME training programs, college data, and candidate surveys. For official information, contact Transport Canada's licensing division directly.

Which AME exam has the lowest pass rate?

Based on available data, the Electrical / Avionics (EA) exam has the lowest estimated first-attempt pass rate at approximately 55–62%. The CARS and Powerplant exams are close behind with pass rates in the 60–68% range.

Can I retake a failed AME exam immediately?

No. Transport Canada requires a 30-day waiting period before retaking a failed exam. This is to ensure candidates have adequate time to re-study and prepare before making another attempt. Use this time wisely — analyze your results, identify weak areas, and focus your practice on those specific topics.

How many practice questions should I do per exam?

Most successful candidates report completing 300–500 practice questions per exam before their test date. For the harder exams (EA, CARS, PP), many candidates do 500–700 questions. The quality of practice matters as much as quantity — ensure you are reviewing explanations for every question, not just counting reps.

For a more detailed look at each exam's structure, question format, and preparation requirements, visit our AME exam structure guide or explore our recommended study resources.