FAA Part 107 Remote Pilot (UAG)OperationsEasy
A remote pilot in command is performing a preflight inspection of a sUAS before a mapping mission. During the inspection, the pilot notices a hairline crack on one of the propeller blades. What is the appropriate action to take before flight?
- AApply tape over the crack to prevent further damage during flight.
- BReduce the maximum operating altitude to minimize stress on the propeller.
- CContinue with the flight, noting the crack for post-flight maintenance.
- DReplace the damaged propeller blade before flight.
Show answer & explanationAnswer & explanation
Correct answer: D. Replace the damaged propeller blade before flight.
Any damage to critical flight components, especially propellers, can compromise flight safety and lead to catastrophic failure. Propellers should always be in perfect condition. A hairline crack indicates structural weakness and requires immediate replacement before operation.
Why the other options are wrong
- A. Taping a damaged propeller is a temporary fix that does not restore structural integrity and is unsafe.
- B. Reducing altitude does not mitigate the risk of a propeller failure and is not a substitute for proper maintenance.
- C. Operating with a damaged propeller is unsafe and violates the requirement for an airworthy sUAS.
sUAS Preflight Inspection: Propeller Damage
During preflight inspection, any damage, such as cracks, nicks, or bends, to propeller blades requires immediate replacement to ensure the small unmanned aircraft system (sUAS) is in a condition for safe flight.
- Propellers are critical flight components.
- Even minor damage can lead to catastrophic failure.
- Replacement is mandatory, not repair or neglect.
Memory trick: Cracked prop? Stop and swap!