What is the purpose of a preflight inspection?
ATo satisfy FAA paperwork requirements before commercial operations
BTo ensure the aircraft is in a safe operating condition for the planned flight✓ Correct answer
CTo calibrate the flight controller and GPS to local magnetic variation
Why →Under 14 CFR § 107.49, the remote PIC must perform a preflight inspection to ensure the UAS is in a condition for safe operation. The inspection covers airframe integrity, propeller condition, battery state of health, control link function, and any condition that might affect safe flight.
The trap →GPS calibration and flight controller initialization are separate procedures. The regulatory purpose of the preflight inspection is airworthiness, not paperwork.
Field note →Develop a written preflight checklist specific to your aircraft. Key items: propeller cracks or nicks, motor smoothness, battery voltage and cycle count, gimbal freedom, GPS lock, compass calibration, return-to-home altitude setting.