FAA 107 Aircraft Maintenance & Pre-flight Inspection 5

Question 1

What information should a remote pilot record in a maintenance log after replacing a motor on a sUAS?

Accepted Answer

Date, nature of maintenance, parts used, and who performed the work

Answer

A thorough maintenance record includes the date, description of work, replacement parts, and the person who performed the work to establish a complete maintenance history.

Question 2

A pilot notices that the flight controller firmware update available is marked 'mandatory safety update.' What action should be taken?

Accepted Answer

Apply the update before the next flight and verify all systems after updating

Answer

Mandatory safety updates address known safety-critical bugs or vulnerabilities and must be applied before operating the aircraft to maintain airworthiness.

Question 3

Which of the following best describes 'range testing' as part of a sUAS pre-flight check?

Accepted Answer

Verifying control link integrity at a reduced power setting according to manufacturer procedures

Answer

Range testing uses a reduced transmitter power mode to simulate long-range signal conditions at close range, allowing verification of control link quality without actually flying far away.

Question 4

A remote pilot discovers that the propeller mounting nuts were over-tightened during the last maintenance session, causing thread damage. What is the appropriate response?

Accepted Answer

Replace the damaged hardware with manufacturer-approved fasteners before flying

Answer

Damaged threads cannot reliably secure propellers under flight loads and vibration, so stripped or damaged fasteners must be replaced with approved hardware before flight.

Question 5

What is the significance of checking the center of gravity (CG) on a sUAS before flight?

Accepted Answer

An improperly balanced CG can cause unpredictable flight characteristics and reduce motor authority

Answer

An off-center CG forces some motors to work harder to maintain level flight, reduces maneuverability, and can cause the aircraft to flip if one motor reaches its limit.

FAA Practice Test

FAA Practice Test

FAA 107 Aircraft Maintenance & Pre-flight Inspection 5