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
How should a UAS operator document a maintenance action performed in the field?
Answer: Record the action, date, part replaced, and technician ID in the maintenance log immediately
All maintenance actions must be documented immediately with the action performed, date, parts used, and technician identification to maintain an accurate aircraft maintenance record.
What is the primary risk of flying a UAS with a cracked landing gear leg?
Answer: Hard landing collapse that damages the airframe, battery, or payload on touchdown
A cracked landing gear leg can collapse on touchdown, causing the UAS to tip over and potentially damaging the airframe, battery, or payload.
Which practice best extends the service life of UAS brushless motors?
Answer: Keeping motors clean, avoiding sustained high-load operation, and inspecting bell and windings regularly
Keeping motors clean, avoiding sustained overload, and regularly inspecting the bell and windings are the key practices for extending brushless motor service life.
What action should be taken when a UAS data link antenna shows visible physical damage?
Answer: Replace the antenna before the next flight to ensure communication reliability
A physically damaged antenna should be replaced before the next flight because it may cause intermittent or lost communication with no reliable warning during operations.
What is the correct procedure when a UAS battery's charge level drops below the manufacturer's minimum storage voltage?
Answer: Charge it slowly to storage voltage using a compatible charger's recovery or storage mode
Many chargers include a recovery or storage charge mode that slowly restores a deeply discharged LiPo to safe storage voltage without damaging the cells.
Why is vibration isolation important between the flight controller and the airframe?
Answer: It protects IMU sensors from mechanical vibration that causes flight instability
Vibration isolation protects the IMU sensors inside the flight controller from mechanical vibration, which causes sensor noise and leads to oscillations or unstable flight.
What does a range test after maintenance verify?
Answer: That the radio control link functions reliably at reduced power before returning to full operations
A range test verifies the radio control link works reliably at reduced transmitter power, confirming the receiver, antenna, and wiring are correctly installed after maintenance.