Practice Test Geeks(UAS) Unmanned Aircraft Systems Certified Practice Test
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Maintenance Flashcards

7 cards from real UAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Maintenance flashcards as text

  1. What is the primary purpose of inspecting propeller blades before each flight?

    Answer: To detect nicks, cracks, or delamination that could cause failure

    Propeller blades must be inspected for nicks, cracks, or delamination before each flight because structural defects can cause catastrophic in-flight failure.

  2. When should a UAS battery be removed from service?

    Answer: When the battery shows signs of puffing, swelling, or reduced capacity

    A battery showing puffing, swelling, or significant capacity loss is a safety hazard and must be removed from service immediately.

  3. What does a visual inspection of motor mounts primarily check for?

    Answer: Loose fasteners, cracks, or signs of vibration damage

    Motor mount inspections focus on loose fasteners, cracks, and vibration damage because compromised mounts can cause motor separation during flight.

  4. How should a UAS operator handle a flight controller firmware update?

    Answer: Update in a controlled environment and verify calibration before flight

    Firmware updates should be applied in a controlled environment, followed by full calibration verification before returning to operational flights.

  5. What is the correct storage condition for LiPo batteries when not in use for extended periods?

    Answer: Storage voltage of approximately 3.8V per cell in a cool, dry location

    LiPo batteries stored at approximately 3.8V per cell in a cool, dry environment maintain optimal health and longevity.

  6. Which maintenance action should follow any hard landing or crash?

    Answer: Conduct a full structural inspection before the next flight

    A full structural inspection after any hard landing or crash is mandatory because internal damage may not be visible externally.

  7. What is the purpose of performing an ESC calibration on a multirotor UAS?

    Answer: To sync the maximum and minimum throttle signal range across all ESCs

    ESC calibration synchronizes the throttle input range across all electronic speed controllers, ensuring consistent motor response and stable flight.