FAA Part 107 Drone Pilot Exam
Maintenance & Inspections Practice Questions
15 practice questions with detailed explanations — aligned to the FAA Part 107 Drone Pilot Exam.
Q1.Who is responsible for ensuring that the small unmanned aircraft system is safe for flight?
A.The Remote Pilot in Command (Remote PIC)B.The Visual ObserverC.The OwnerD.The FAAA. The Remote Pilot in Command (Remote PIC)Explanation: 14 CFR § 107.15 places the responsibility solely on the Remote PIC to perform a preflight check and ensure the aircraft is in a condition for safe operation.
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Q2.Scheduled maintenance should be performed in accordance with:
A.The manufacturer's instructionsB.The pilot's best guessC.The FAA's standard maintenance manualD.Only when something breaksA. The manufacturer's instructionsExplanation: AC 107-2 advises following the manufacturer's maintenance instructions and schedules. If none exist, the pilot should establish a scheduled maintenance protocol.
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Q3.Before each flight, the preflight inspection must include:
A.Checking the control link, battery levels, and structural integrityB.Checking the pilot's logbookC.Weighing the aircraftD.Testing the maximum speedA. Checking the control link, battery levels, and structural integrityExplanation: 14 CFR § 107.49 requires a preflight assessment of the system, including the link and aircraft condition.
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Q4.If the manufacturer does not provide a maintenance schedule, the remote pilot should:
A.Establish their own schedule based on operating experience and best practicesB.Never perform maintenanceC.Return the droneD.Contact the FAA for a scheduleA. Establish their own schedule based on operating experience and best practicesExplanation: If no manufacturer guidance exists, the operator should create a documented maintenance program (e.g., replace props every 50 hours).
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Q5.During a preflight inspection, you notice a small crack in a propeller. You should:
A.Replace the propeller before flightB.Fly anyway if it's smallC.Tape it upD.Fly at a lower altitudeA. Replace the propeller before flightExplanation: Any structural defect that could affect flight characteristics requires correction (replacement) before flight. A cracked prop can shatter under load.
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Q6.What is the purpose of record-keeping for sUAS maintenance?
A.To track aircraft reliability and document compliance with safe operation requirementsB.To increase the resale valueC.To show the FAA during random stopsD.It is not required or recommendedA. To track aircraft reliability and document compliance with safe operation requirementsExplanation: While not strictly mandatory for all Part 107 ops (unlike Part 135), record-keeping is highly recommended by the FAA to demonstrate a commitment to safety and track component life.
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Q7.LiPo batteries that are puffed or swollen should be:
A.Retired from service and disposed of properlyB.Used only for short flightsC.Punctured to release the gasD.Frozen to shrink themA. Retired from service and disposed of properlyExplanation: Swelling indicates internal chemical breakdown and gas buildup, posing a high fire risk. They must not be used.
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Q8.When soldering a connector on a drone, a 'cold solder joint':
A.Is brittle and conducts electricity poorly, leading to potential failureB.Is the preferred method for electronicsC.Is caused by using too much heatD.Is stronger than a hot jointA. Is brittle and conducts electricity poorly, leading to potential failureExplanation: A cold solder joint (dull, grainy) is a weak connection that can break under vibration, causing power loss.
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Q9.Frequency interference can be reduced during maintenance checks by:
A.Ensuring all firmware is updated and performing a compass/IMU calibration in an open areaB.Wrapping the drone in foilC.Flying near power linesD.Using analog videoA. Ensuring all firmware is updated and performing a compass/IMU calibration in an open areaExplanation: Regular firmware updates and calibrations (away from magnetic interference) ensure the C2 link and navigation systems function correctly.
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Q10.If a remote pilot makes a repair to the sUAS (e.g., replacing a motor), they should:
A.Perform a functional test flight (ground check and low-level hover) before resuming normal operationsB.Assume it works and fly a mission immediatelyC.Send it to the FAA for inspectionD.Fly only over waterA. Perform a functional test flight (ground check and low-level hover) before resuming normal operationsExplanation: Any maintenance or repair requires a functional check to verify the system is airworthy before conducting operations.
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Q11.Which of the following is considered 'Preventative Maintenance'?
A.Cleaning camera lenses and inspecting props for chipsB.Modifying the internal circuit boardC.Changing the flight controller software codeD.Replacing the entire frameA. Cleaning camera lenses and inspecting props for chipsExplanation: Preventative maintenance involves simple tasks like cleaning, inspection, and replacing small consumable parts (props) to prevent failure.
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Q12.Over-discharging a LiPo battery (below 3.0V per cell) will likely:
A.Cause permanent damage to the battery chemistryB.Improve its memoryC.Have no effectD.Make it charge faster next timeA. Cause permanent damage to the battery chemistryExplanation: LiPo batteries are sensitive to voltage. dropping below ~3.0V/cell causes irreversible chemical damage.
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Q13.A 'Composite' airframe (carbon fiber) should be inspected for:
A.Delamination, cracks, and breaks in the weaveB.RustC.TermitesD.Dents (which are acceptable)A. Delamination, cracks, and breaks in the weaveExplanation: Composites don't rust, but they can delaminate (layers separating) or crack, which compromises structural integrity.
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Q14.Who can perform maintenance on a small UAS?
A.The operator, owner, or a designated repair person (no specific mechanic certificate is required by Part 107)B.Only a certified Airframe & Powerplant (A&P) mechanicC.Only the manufacturerD.Only the FAAA. The operator, owner, or a designated repair person (no specific mechanic certificate is required by Part 107)Explanation: Part 107 does not require a certified mechanic for sUAS maintenance. The operator is responsible for ensuring the work is done correctly.
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Q15.Keeping a maintenance log is valuable because:
A.It establishes a history of the aircraft's condition for safety and liabilityB.The FAA requires it for recreational flyersC.It makes the drone fly fasterD.It allows you to fly in Class B airspaceA. It establishes a history of the aircraft's condition for safety and liabilityExplanation: Documentation proves diligence and helps track component life cycles (like motors/batteries) to prevent in-flight failures.
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