Airframe Exam FAQ: AF Maintenance Questions Answered
The Airframe (AF) exam is one of the two technical written exams required for the AME License M rating. It covers everything from structural materials and fuselage construction to hydraulic systems, landing gear, flight controls, and environmental systems. This FAQ answers the most common questions candidates have about the exam format, content, difficulty, and how to prepare effectively using Sky Licence.
Sky Licence Team
AME exam preparation specialists — helping engineers earn their Transport Canada license since 2025
Overview of the Airframe Exam
The Airframe exam is one of the five Transport Canada written exams required for your AME license and one of two technical exams needed specifically for the License M rating (alongside the Powerplant exam). It tests your theoretical knowledge of aircraft structures and airframe systems, covering 12 chapters defined in the TP14038E syllabus. These chapters encompass airframe structures (fuselage, wings, empennage, flight controls), structural materials (metals, composites, wood, fabrics), hydraulic and pneumatic power systems, landing gear systems, ice and rain protection, cabin environmental control systems, aircraft fuel systems, position and warning systems, and fire protection systems.
The exam is designed to ensure that every License M candidate has a comprehensive understanding of how airframe systems work, how they are maintained, and how to diagnose and correct faults. While your practical training will develop your hands-on skills, the written exam ensures you have the theoretical foundation to make sound maintenance decisions. The questions range from basic component identification and function to complex integrated system scenarios where a failure in one system affects the operation of another. This integrated knowledge is essential for real-world troubleshooting.
Preparing for the Airframe exam requires a systematic approach. With 12 chapters of material, you cannot afford to study randomly. The most successful candidates organize their study by system, master each system individually, and then practice with cross-system scenarios. Sky Licence supports this approach with chapter-based adaptive difficulty — as you demonstrate proficiency in one chapter, the system progresses you to harder questions while also integrating questions from previously mastered chapters to reinforce retention. This spiral learning approach ensures that material stays fresh in your memory throughout your study period.
Key Airframe Systems to Master
The Airframe exam covers a broad range of systems, but certain areas receive more emphasis based on Transport Canada exam blueprints. Hydraulic and pneumatic power systems are consistently among the most heavily tested topics, followed by landing gear systems and flight controls. Structural materials and inspection criteria are also important, particularly questions about damage assessment and repair limits. Fuel systems, environmental control, and ice protection form the next tier of importance. You should allocate your study time accordingly, spending more time on the high-weight topics while still covering every chapter in the syllabus. Sky Licence performance analytics show you your accuracy by chapter so you can see where you stand relative to the exam requirements.
Frequently Asked Questions
What is the Airframe (AF) exam and what does it cover?
The Airframe (AF) exam is one of the two technical written exams required for the AME License M (Airframe & Powerplant) rating. It tests your knowledge of aircraft structures and airframe systems, including fuselage and wing structures, flight controls, hydraulic and pneumatic systems, landing gear, ice and rain protection, cabin environmental systems, and fuel systems. The exam is based on the TP14038E syllabus, which defines 12 chapters of airframe-related learning objectives. Sky Licence covers all 12 airframe chapters with over 600 practice questions, organized by system for targeted study.
How many questions are on the Airframe exam and how much time do I get?
The Airframe exam consists of 50 multiple-choice questions with a 90-minute time limit. The pass mark is 70% (35 out of 50 correct). Like all Transport Canada AME written exams, it is administered on computer at approved testing centers. The questions range from basic system knowledge (e.g., "What type of hydraulic fluid is used in a specific system?") to complex troubleshooting scenarios that require integrating knowledge across multiple airframe systems. Sky Licence offers timed mock exams that replicate this exact format, helping you build both speed and accuracy before your scheduled test date.
What are the most important topics to study for the Airframe exam?
Based on the TP14038E syllabus and candidate feedback, the most heavily tested airframe topics include: aircraft structural components and their materials (fuselage, wings, empennage); flight control systems — both primary (ailerons, elevators, rudder) and secondary (flaps, slats, spoilers, trim); hydraulic power systems including pumps, actuators, valves, and fluids; landing gear systems including retraction mechanisms, shock struts, wheels, and brakes; cabin pressurization and environmental control systems; ice and rain protection systems (pneumatic, electric, chemical); and aircraft fuel systems including fuel distribution, venting, and indicating. Structural inspection and damage assessment is also a significant topic area.
Is the Airframe exam harder than the Powerplant exam?
Opinions vary among candidates, but many find the Airframe exam slightly more challenging because it covers a broader range of systems. The Airframe syllabus includes 12 chapters covering everything from structural materials to complex hydraulic and pneumatic systems, while the Powerplant exam focuses more narrowly on engines and their supporting systems. However, if you have strong practical experience with airframe systems, you may find the Airframe exam more intuitive. The key is consistent study across all topic areas — neglecting even one chapter can cost you several questions on the exam. Sky Licence tracks your accuracy across each airframe chapter so you can identify and address weak areas before exam day.
Do I need to know specific aircraft types for the Airframe exam?
The Airframe exam tests general airframe knowledge applicable to most aircraft types, not type-specific details for particular models. You will not be asked about the specific landing gear system of a Boeing 737 versus an Airbus A320. Instead, the exam tests your understanding of airframe principles that apply across aircraft: how hydraulic systems work in general, what materials are used for different structural components, the principles of flight control actuation, and so on. However, you should be familiar with representative examples from common aircraft categories (general aviation, transport category, rotorcraft) to answer scenario-based questions. Sky Licence questions cover these representative examples across different aircraft classes.
What types of hydraulic systems are covered on the exam?
Hydraulic systems are one of the most heavily tested airframe topics. You need to understand the basic hydraulic principles (Pascal's law, pressure, flow, force multiplication), hydraulic fluid types (mineral-based, phosphate ester, and their compatibility), system components (pumps — gear, vane, piston; actuators; valves — selector, pressure relief, check, sequence; accumulators — bladder, piston, diaphragm; filters and reservoirs), and system operations (power-up, pressure regulation, emergency systems). You should also know how to identify fluid contamination, proper handling procedures, and the dangers of mixing incompatible fluids. Sky Licence includes a dedicated hydraulic systems module with progressive difficulty levels.
How much structural metallurgy do I need to know?
The Airframe exam requires a solid understanding of aircraft structural materials and their properties. You should know the common aluminum alloys used in airframe construction (2024, 6061, 7075) and their characteristics — strength, corrosion resistance, and typical applications. You should understand heat treatment processes (solution heat treatment, precipitation hardening, annealing) and how they affect material properties. Steel alloys (4130, 4340) and their applications in landing gear and engine mounts are also tested. Composite materials — including fiberglass, carbon fiber, and Kevlar — are increasingly covered as they become more common in modern aircraft structures. Knowledge of corrosion types (surface, pitting, intergranular, exfoliation, stress corrosion cracking) and their detection and treatment is also essential.
What should I know about landing gear systems?
Landing gear is a major topic area on the Airframe exam. You need to understand the different landing gear configurations (conventional, tricycle, tandem) and arrangements (fixed vs. retractable). Key components include shock struts (oleo-pneumatic, spring, bungee), landing gear retraction and extension mechanisms (hydraulic, electric, manual backup systems), wheel and brake assemblies (disc brakes, expander tube brakes, anti-skid systems), nose wheel steering systems, and landing gear position and warning systems. Tire construction, ratings, and wear limits are also tested. Understanding the inspection criteria for landing gear components per Transport Canada standards is important for scenario questions.
How are flight control systems tested on the exam?
Flight control questions test your knowledge of primary flight controls (ailerons, elevators, rudder) and secondary flight controls (flaps, slats, spoilers, trim tabs, servo tabs). You should understand the actuation methods (mechanical cables, push-pull rods, hydraulic actuators, fly-by-wire), control surface construction, balance and rigging requirements, and the effects of control surface defects. Trim systems — including trim tabs, balance tabs, anti-servo tabs, and electric trim — are frequently tested. You should also know the inspection requirements for control cables (wear limits, tension, corrosion), pulleys, and fairleads. Modern fly-by-wire systems and their redundancy requirements are increasingly appearing on the exam.
What study strategy works best for the Airframe exam?
The most effective study strategy for the Airframe exam combines topical study with system-level integration. Start by studying each airframe system individually — hydraulics, landing gear, flight controls, structures, fuel, pneumatics, environmental systems — using focused question sets. Once you have solid knowledge of each system, practice with integrated scenario questions that require combining knowledge across multiple systems (e.g., a hydraulic failure affecting landing gear extension and flight control operation). This two-phase approach builds both depth and breadth. Sky Licence supports this strategy with chapter-level adaptive difficulty for initial learning and mixed-topic mock exams for integration practice.
Can I take the Airframe exam before the CARS exam?
There is no required order for the five AME written exams. You can take them in any sequence that suits your study schedule. Many candidates choose to take the CARS exam first because regulatory knowledge provides a foundation for understanding maintenance requirements referenced in the technical exams. Others prefer to start with the technical exams — airframe or powerplant — because the material feels more familiar from their practical training. The only requirement is that you must pass all five exams before applying for your AME license. Sky Licence lets you study for multiple exams simultaneously and switch between modules as your priorities change.
How does Sky Licence prepare me for the Airframe exam?
Sky Licence offers a comprehensive Airframe exam module with over 600 practice questions covering all 12 chapters of the TP14038E airframe syllabus. Features include AI-powered adaptive difficulty that adjusts to your performance across each topic area, detailed answer explanations with textbook-level depth, timed mock exams that match the real 90-minute format, and performance analytics showing your accuracy by chapter and system. Whether you are studying structures, hydraulics, landing gear, or flight controls, Sky Licence adapts to your level and helps you focus on areas needing improvement. Create a free account on Sky Licence to start mastering airframe systems today.
For more detailed information on the AME licensing process and the other exams, check out our complete AME license guide and the Powerplant exam FAQ. Visit the main Sky Licence FAQ for platform questions.
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