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Quizzes > Quizzes for Business > Manufacturing

Take the Aircraft Maintenance Technician Certification Quiz

Test Your Aircraft Maintenance Knowledge and Skills

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art promoting a quiz on Aircraft Maintenance Technician Certification

Ready to test your aircraft maintenance skills with a focused Technician Certification Quiz? Whether you're an aspiring technician or a seasoned pro refining maintenance procedures, this practice quiz will help solidify your knowledge. Dive into the Maintenance Technician Knowledge Assessment for more in-depth questions, or review regulations via the Aircraft Maintenance Regulations Knowledge Test. You'll tackle 15 multiple-choice questions covering key systems, safety protocols, and troubleshooting challenges. Customize the quiz in our editor and explore additional quizzes to keep advancing your expertise.

What is the primary purpose of a preflight inspection?
To calibrate flight instruments
To verify passenger weight and balance
To adjust engine tuning for performance
To detect defects or conditions unsafe for flight
A preflight inspection is performed to identify any defects or safety issues before flight. It ensures the aircraft is in an airworthy condition before departure.
Which tool is specifically designed to measure the torque applied to a fastener?
Micrometer
Vernier caliper
Drift punch
Torque wrench
A torque wrench is calibrated to apply and measure a specific torque value on fasteners. Other tools like micrometers and calipers measure dimensions, not torque.
In maintenance documentation, the acronym "AD" refers to which of the following?
Aircraft Data
Alternative Deviation
Airworthiness Directive
Authorized Document
AD stands for Airworthiness Directive, which is a mandatory FAA notification to correct unsafe conditions. It must be complied with to maintain airworthiness.
Which document contains detailed structural repair procedures for a specific aircraft model?
Weight and Balance Report
Aircraft Flight Manual
Structural Repair Manual
Pilot Operating Handbook
The Structural Repair Manual provides step-by-step procedures for repairing aircraft structures. Other manuals cover flight operations, not repair techniques.
Which FAA form is used to record a major repair or alteration?
FAA Form 8060-4
FAA Form 337
FAA Form 8130-3
FAA Form 8100-2
FAA Form 337 is used to document major repairs and alterations to aircraft. It provides an official record of changes to the aircraft's structure or systems.
When tightening a series of fasteners in a circular pattern, what is the recommended procedure to achieve uniform clamping?
Tighten half the bolts then back them off
Tighten sequentially around the circle
Tighten in a star (cross-bolt) pattern
Tighten opposing pairs simultaneously
A star or cross-bolt tightening pattern ensures even distribution of load and prevents distortion. Sequential tightening can lead to uneven clamping stresses.
To verify compliance with an Airworthiness Directive, a technician should first review which document?
Weight and Balance Report
Aircraft registration certificate
Aircraft maintenance logbook entries
Pilot Operating Handbook
Maintenance logbook entries will record AD compliance or deferment. This is the primary source to confirm that mandated inspections or modifications have been performed.
If an engine shows a sudden drop in fuel flow without a change in throttle setting, what is the most likely cause?
Clogged fuel filter
Oil pressure leak
Faulty mixture control
Magneto failure
A clogged fuel filter restricts flow, causing a drop in fuel flow gauge readings. Mixture or ignition issues would affect engine power, not just the flow indicator.
In hydraulic systems, a metallic debris contamination indicator typically changes to which color when contaminated?
Green
Red
Yellow
Blue
Red indicates that metallic particles have been trapped by the contamination indicator. Green or no color change means the system is within acceptable contamination limits.
What is the primary purpose of performing a borescope inspection inside an engine cylinder?
Cleaning carbon deposits
Testing spark plug electrode gap
Visual internal inspection for wear and damage
Measuring cylinder compression
A borescope allows visual inspection of hard-to-reach internal engine areas to detect cracks, scoring, or foreign object damage. It does not perform measurements or cleaning.
According to FAR Part 43, how long must a technician retain maintenance records after returning an aircraft to service?
Six months
Three years
One year
Two years
FAR 43.9(c) requires retention of maintenance records for two years after an aircraft is returned to service. This ensures regulatory compliance and historical traceability.
A dim alternator warning light on the instrument panel typically indicates a fault in which component?
Battery acid level
Alternator belt tension
Voltage regulator
Starter solenoid
A dim warning light usually means the voltage regulator is not supplying proper field current. Belt or battery issues would more likely cause a complete light out or battery warning.
When isolating an electrical short in a wiring harness, what advantage does a fuse-rated test lamp offer?
Automatically identifies ground faults
Provides brighter illumination
Can test high-voltage circuits safely
Limits current to prevent fuse blow-outs
A fuse-rated test lamp limits the current draw to a safe level to avoid burning out the circuit or blowing fuses. It does not enhance brightness or identify faults automatically.
Which multimeter setting is used to check continuity of a ground circuit?
Resistance (ohms) setting
DC current (amps) setting
Capacitance setting
AC voltage setting
Continuity checks are performed using the resistance or ohms setting to ensure there is negligible resistance in a ground circuit. Voltage or current settings are not used for continuity tests.
If a fuel boost pump fails to activate, what should be the technician's first troubleshooting step?
Replace the pump filter
Remove and bench-test the pump
Inspect the alternator output
Check the circuit breaker for a tripped condition
The first step in electrical troubleshooting is to verify the circuit breaker is closed. If the breaker is tripped, the pump won't receive power even if wiring and the pump itself are good.
During troubleshooting of a bleed air system, a technician records an unusually high pressure in the manifold. What is the most likely cause?
Maladjusted temperature sensor
Clogged air inlet filter
Faulty or stuck pressure relief valve
Leaking downstream duct
A stuck or malfunctioning pressure relief valve will prevent excess bleed air from escaping, causing manifold pressure to rise. Filters or leaks would reduce pressure, not increase it.
An oil analysis report shows elevated silicon levels in engine oil. What is the most probable source of contamination?
Additive depletion in the oil
Ingestion of dirt through a defective air filter
Sealant breakdown inside the pump
Exhaust gas leak into the crankcase
Silicon in oil analysis typically indicates dirt or dust ingress, often from a damaged or improperly installed air filter. Other options are not common silicon sources.
A pilot reports intermittent loss of fuel flow during cruise. Voltage readings on the fuel pump circuit drop and then recover. Which diagnostic technique should the technician use?
Conduct a borescope inspection
Apply sealant to pump connections
Perform a wiggle-test on the wiring harness
Use an eddy current probe
A wiggle-test helps identify intermittent wiring or connector faults by moving the harness while observing voltage behavior. Borescope and eddy current methods don't address electrical continuity.
When performing an eddy current inspection on a turbine blade, which type of defect is most effectively detected?
Subsurface corrosion cavities
Internal voids
Blade balance issues
Surface cracks
Eddy current inspection is highly sensitive to surface and near-surface cracks. It is less effective for deep internal flaws or balance issues, which require other methods.
Under FAR Part 43, progressive inspection programs must comply with the requirements of which appendix?
Appendix D
Appendix B
Appendix A
Appendix C
FAR Part 43 Appendix D outlines the standards for progressive inspection programs. Other appendices address inspections (A), weighted averages (B), and symbols (C).
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Learning Outcomes

  1. Identify critical aircraft maintenance procedures
  2. Evaluate maintenance documentation for regulatory compliance
  3. Analyse aircraft system malfunctions effectively
  4. Demonstrate understanding of aviation safety regulations
  5. Apply troubleshooting techniques to real-world scenarios

Cheat Sheet

  1. Master 14 CFR Part 43 Maintenance Procedures - Dive into the rules governing maintenance, preventive maintenance, rebuilding, and alterations to keep aircraft airworthy and compliant. Think of it as your maintenance playbook - know every chapter so surprises stay grounded. FAA Mechanic Regulations & Policies
  2. Become a Compliance Whiz with 14 CFR § 91.407 - Learn how to evaluate maintenance documentation and ensure every logbook entry and approval is spot-on before you taxi. Proper paperwork means smooth skies and happy inspectors. 14 CFR § 91.407 Operation after Maintenance
  3. Analyze Aircraft System Malfunctions - Develop a detective's mindset by recognizing hydraulic hiccups like odd pressure readings or electrical gremlins such as flickering gauges. With practice, you'll diagnose issues faster than you can say "check valve." Troubleshooting Aircraft Systems
  4. Conquer Airworthiness Directives (ADs) - ADs are non-negotiable safety fixes mandated by the FAA. Get comfortable tracking, interpreting, and applying these directives so both you and your aircraft stay in the clear. Aircraft Maintenance & Law
  5. Apply Systematic Troubleshooting Techniques - Follow a proven three-step approach: gather all the clues, run targeted tests, and document your findings like a pro. This method turns complex faults into manageable puzzles. System Troubleshooting Techniques
  6. Embrace Maintenance Resource Management (MRM) - Teamwork makes the dream work in maintenance! MRM boosts communication, situational awareness, and decision-making to slash human error and keep operations running smoothly. Maintenance Resource Management
  7. Understand Human Factors & Procedural Non-Compliance - Explore how skipping steps or misreading procedures can lead to mistakes. By studying real incidents, you'll learn to build effective countermeasures and stay one step ahead of human error. Procedural Non-Compliance
  8. Get to Know the Pitot-Static System - This critical pitot-static combo measures airspeed and altitude, but ice or debris can throw it off. Learn how to spot and clear blockages to keep your instruments honest. Pitot - Static System
  9. Follow Safety Procedures & PPE Rules - From routine inspections to fault reporting and protective gear, adhering to safety protocols is non-negotiable. A safe hangar means healthy mechanics and aircraft ready to soar. Safety Procedures & Regulations
  10. Implement Tool Control & FOD Prevention - Keep a tight log of every wrench, probe, and bolt to avoid foreign object damage (FOD). Good tool control is the secret sauce of spotless maintenance sessions. Tool Control & FOD Prevention
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