FAA Part 107 Remote Pilot (UAG)OperationsMedium
During a preflight inspection, a remote pilot notices that one of the sUAS's propellers has a small chip on the leading edge. What is the most appropriate action the remote pilot should take?
- AProceed with the flight, noting the damage for a post-flight repair.
- BReplace the damaged propeller before flight.
- CSwitch to a different flight mode that relies less on that propeller.
- DAttempt a temporary repair of the chip with adhesive tape.
Show answer & explanationAnswer & explanation
Correct answer: B. Replace the damaged propeller before flight.
Even a small chip can cause an imbalance, leading to excessive vibration, reduced efficiency, and potential catastrophic failure of the propeller or motor during flight. 14 CFR Part 107.49(a)(2) requires that the sUAS be in a condition for safe operation. Replacing the damaged propeller is the only appropriate action.
Why the other options are wrong
- A. Flying with a damaged propeller is unsafe and can lead to equipment failure or loss of control.
- C. Flight modes do not compensate for physical damage to a propeller; this would still be an unsafe operation.
- D. Temporary repairs with adhesive tape are ineffective and unsafe for propellers, which experience significant rotational forces.
Propeller Damage Action
Any damage to a sUAS propeller, no matter how small, necessitates immediate replacement before flight to ensure safe operation.
- Damage causes imbalance/vibration
- Affects performance and safety
- Always replace, never repair temporarily
Memory trick: Chipped Propeller? 'NO FLY', 'REPLACE' immediately.