Free Practice Questions for NCAA AME Airframe

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Key Facts: NCAA AME Airframe Exam

60 Q

Exam Questions

NCAA AME Syllabus

120 Min

Exam Duration

NCAA AME Syllabus

75%

Passing Score

Nig. CARs Part 2

₦50,000

Exam Fee

NCAA Official Schedule of Fees

NCAA AME Airframe is a 60-question, 120-minute certification exam administered by NCAA requiring a 75% passing score under Nig. CARs Part 2 and Part 5.

Sample NCAA AME Airframe Practice Questions

Try these sample questions to review concepts for the NCAA AME Airframe exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which aluminum alloy heat treatment designation indicates that the metal has been solution heat-treated and artificially aged?

A.T6

B.O

C.T3

D.F

Explanation: In the aluminum temper designation system, 'T6' indicates that the alloy has undergone solution heat treatment followed by artificial aging to reach its peak tensile strength. 'T3' is solution heat-treated and cold-worked, 'O' is annealed, and 'F' is as-fabricated.

2What primary advantage does Alclad 2024-T3 aluminum sheet possess over unclad 2024-T3 aluminum sheet?

A.Superior corrosion resistance due to a pure aluminum surface layer

B.Higher ultimate tensile strength than structural steel

C.Increased resistance to high-temperature thermal degradation above 500°F

D.Greater hardness and scratch resistance during riveting operations

Explanation: Alclad consists of a high-strength aluminum alloy core (such as 2024) coated on both sides with a thin layer of commercially pure aluminum (typically 1.5% to 5% of total thickness), which provides galvanic protection and superior corrosion resistance.

3Which type of stress is produced inside a cantilever wing spar upper cap during level forward flight?

A.Compression stress

B.Tension stress

C.Torsional shear stress

D.Pure bearing stress

Explanation: During unaccelerated level flight, aerodynamic lift forces upward on the wing bend it upward. This upward bending compresses the top skin and upper spar cap (compression stress) while stretching the lower skin and bottom spar cap (tension stress).

4What type of aircraft structural design relies primarily on external skin, formers, and bulkheads to carry structural loads without heavy internal longitudinal framework?

A.Monocoque structure

B.Pratt truss structure

C.Semi-monocoque structure

D.Warren truss structure

Explanation: A monocoque structure ('single shell') uses the outer skin to carry all or most of the primary flight and ground loads, relying only on transverse formers and bulkheads to give shape.

5Which non-destructive testing (NDT) method is most effective for detecting internal subsurface delaminations in thick carbon-fiber reinforced polymer (CFRP) aircraft structures?

A.Ultrasonic pulse-echo testing

B.Dye penetrant inspection

C.Magnetic particle inspection

D.Eddy current testing

Explanation: Ultrasonic pulse-echo testing uses high-frequency sound waves transmitted through composite laminates. Delaminations or voids reflect sound energy back to the transducer, making ultrasonic NDT ideal for subsurface CFRP inspection.

6Why must aramid fiber (Kevlar®) composite materials be drilled with special brad-point or diamond-coated drill bits?

A.Aramid fibers tend to fray and fuzz rather than cut cleanly when standard twist drills are used

B.Kevlar is extremely brittle and shatters under normal high-speed steel drill pressure

C.Aramid fibers generate toxic halogen gas when subjected to friction from twist drills

D.Standard twist drills instantly react chemically with epoxy matrix causing resin liquefaction

Explanation: Aramid fibers are exceptionally tough and flexible; standard twist drills push and tear the fibers, causing extensive fuzzing, fraying, and fiber breakout along the hole perimeter.

7In composite repair, what function does release fabric (peel ply) serve when placed directly over a wet layup or prepreg repair patch?

A.It provides a clean, textured surface for subsequent bonding and allows excess resin and trapped air to bleed through

B.It acts as a permanent structural outer skin layer to absorb UV radiation damage

C.It melts at cure temperatures to seal moisture permanently out of honeycomb cores

D.It conducts electrical current evenly across the repair area to accelerate inductive heating

Explanation: Peel ply (release fabric) is a porous synthetic cloth placed over laminate repairs. It allows volatile gases and surplus resin to pass into bleeder material, and when peeled off after cure, leaves a clean textured surface suitable for painting or secondary bonding without sanding.

8What is the primary cause of intergranular corrosion in 2024 aluminum alloy?

A.Improper or slow quenching during heat treatment causing copper to precipitate along grain boundaries

B.Direct exposure to pure hydraulic fluid (MIL-H-5606) at high temperatures

C.Excessive anodizing layer thickness exceeding 0.005 inches

D.Over-torquing structural fasteners beyond specified limits

Explanation: Intergranular corrosion occurs along grain boundaries when aluminum-copper alloys are quenched too slowly during solution heat treatment. Delay in quenching allows noble copper-aluminum compounds to precipitate along grain boundaries, setting up galvanic micro-cells.

9Which type of sandwich core material is most vulnerable to internal moisture accumulation and core degradation if skin punctures occur?

A.Nomex® honeycomb core

B.Solid closed-cell polymethacrylimide (PMI) foam core

C.Solid syntactic epoxy foam core

D.Solid aluminum honeycomb core with potted moisture barriers

Explanation: Nomex® honeycomb consists of aramid paper impregnated with phenolic resin in an open hex-cell array. Moisture entering skin punctures wicks into the open cells, causing freeze-thaw disbonding and core degradation.

10When drilling titanium alloy structural components during airframe repairs, which cutting parameters should be maintained?

A.Low drill speed (RPM), heavy steady feed pressure, and continuous application of cutting fluid

B.High drill speed (RPM), light feed pressure, and dry unlubricated drilling

C.Ultra-high speed pneumatic drilling with standard high-speed steel twist bits

D.Intermittent light tapping without cutting fluid to prevent thermal shock

Explanation: Titanium has low thermal conductivity and work-hardens rapidly. To prevent work-hardening and tool destruction, engineers must use low cutting speeds (RPM), heavy positive feed pressure (to keep the cutter biting into unworked metal), and heavy cutting fluid.

About the NCAA AME Airframe Exam

The NCAA Aircraft Maintenance Engineer (AME) Airframe examination evaluates an engineer's technical knowledge across airframe structures, metallic sheet metal repairs, composite materials, hydraulic and pneumatic systems, cabin environmental control/pressurization, flight control rigging, landing gear, fire protection systems, and airworthiness regulations under Nigeria Civil Aviation Regulations (Nig. CARs) Part 2 and Part 5.

Exam sponsor: Nigeria Civil Aviation Authority (NCAA). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

60 MCQs administered electronically or on paper. 75% minimum passing score.

Time Limit

120 minutes

Passing Score

75%

Exam / Certification Fees

₦20,000

Exam sponsor website

Reported exam pass rate: 65-75%. Based on historical NCAA AME examination pass rates. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

15%

Airframe Metallic and Composite Structures

Aircraft structural inspection, stress/strain, aluminum alloys, composite matrix systems, sandwich construction, and defect evaluation.

15%

Sheet Metal Repair and Riveting Calculations

Bend allowance, setback, rivet layout, rivet sizing, layout pitch/edge distance, and structural skin repairs.

15%

Hydraulic Systems & Fluid Dynamics

Pascal's law, hydraulic mechanical advantage, hydraulic fluids, pumps, actuators, valves, accumulators, and reservoir servicing.

10%

Flight Control Systems

Primary and secondary flight controls, cable tensioning, turnbuckles, push-pull rods, control surface rigging, and trim tabs.

12%

Landing Gear, Brakes, and Hydraulics

Oleo-pneumatic shock struts, retraction mechanisms, multi-disc brake systems, antiskid systems, alignment, and tire/wheel maintenance.

Pneumatic Systems & De-Icing/Anti-Icing

High and low pressure pneumatic systems, bleed air components, thermal anti-icing, pneumatic boots, and rain removal systems.

10%

Environmental Control Systems & Pressurization

Cabin air conditioning, bootstrap air cycle machines, vapor cycle cooling, pressurization controllers, outflow valves, and safety relief valves.

Fire Protection & Detection Systems

Continuous loop overheat detectors, spot detectors, HRD fire extinguishing bottles, squibs, and fire agent discharge procedures.

Airframe Inspection & Nig. CARs Regulations

Nig. CARs Part 2 (Personnel Licensing) and Part 5 (Airworthiness), 100-hour/annual inspections, maintenance logbook entries, AD compliance, and major repair releases.

Preparing for the NCAA AME Airframe Exam

What You Need to Know

Passing score: 75%
Assessment: 60 MCQs administered electronically or on paper. 75% minimum passing score.
Time limit: 120 minutes
Exam / certification fees: ₦20,000 Official sources

Using Our Practice Resources

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NCAA AME Airframe: Suggested Study Strategy

1Master sheet metal formulas for Bend Allowance (BA), Setback (SB), and rivet length/pitch calculations.

2Understand Pascal's Law and hydraulic piston area/force calculations.

3Study Nig. CARs Part 2 (AME privileges, experience requirements) and Part 5 (airworthiness directives, maintenance release).

4Memorize environmental control system components: bootstrap air cycle machines, primary and secondary heat exchangers, outflow valves.

5Review flight control rigging principles, cable tension temperature compensation charts, and safety wiring rules.

Frequently Asked Questions

What is the passing score for the NCAA AME Airframe exam?

The passing score for NCAA AME Licence examinations is 75%.

Which Nig. CARs parts govern AME licensing and airworthiness?

Nig. CARs Part 2 governs Personnel Licensing and Nig. CARs Part 5 governs Airworthiness of Aircraft.

How many questions are on the official NCAA AME Airframe exam?

The official examination contains 60 multiple-choice questions to be completed in 120 minutes.

What is the fee for taking the NCAA AME exam?

The total fee is approximately ₦50,000.

Does the exam include mathematical calculations?

Yes, candidates must solve technical calculations involving hydraulic force/pressure, sheet metal bend allowance, rivet length/pitch, altitude pressurization differentials, and strut loads.

Free Practice Questions for NCAA AME Airframe

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