FAA Part 107 Remote Pilot (UAG)OperationsEasy
A remote pilot is preparing to launch a sUAS from a rooftop landing pad. The preflight inspection reveals a small crack on one of the propeller blades. What is the most appropriate action for the remote pilot to take?
- AReplace the damaged propeller with a new, undamaged one before flight.
- BAttempt to sand down the edges of the crack to prevent further propagation.
- CProceed with the flight, but monitor the sUAS closely for any unusual vibrations.
- DApply super glue or tape to repair the crack and then proceed with the flight.
Show answer & explanationAnswer & explanation
Correct answer: A. Replace the damaged propeller with a new, undamaged one before flight.
Any damage to a propeller, even a small crack, can significantly compromise its structural integrity and balance, leading to catastrophic failure during flight. The only safe and appropriate action is to replace the damaged propeller before operation.
Why the other options are wrong
- B. Sanding down a crack would further weaken the propeller and is not a safe repair method.
- C. Operating with a damaged propeller is unsafe and could lead to loss of control or failure.
- D. Repairs like super glue or tape are insufficient for the forces a propeller experiences and are not approved methods.
Propeller Damage
Any physical imperfection on a propeller blade, such as a crack, chip, or bend, that compromises its structural integrity or aerodynamic performance.
- Even minor damage can lead to catastrophic failure.
- Compromises balance and thrust.
- Requires immediate replacement, not repair.
Memory trick: Cracked prop? 'Can't' fly, must 'Change'.