Home › Part 107 Practice Tests › Aviation Weather Questions › Question 60
Why is structural icing especially dangerous for a small unmanned aircraft?
- A.Ice makes propellers more efficient by smoothing them
- B.Ice on propellers and airframe surfaces changes their shape, adds weight, and reduces lift and thrust
- C.Ice only matters for aircraft flying above 10,000 feet
Correct answer
B. Ice on propellers and airframe surfaces changes their shape, adds weight, and reduces lift and thrust
Why
Even a thin coating of ice distorts the airfoil shape of propeller blades and wings and adds weight a small aircraft cannot afford. Part 107 aircraft have no deicing equipment, so icing conditions are a no-go.
Source: FAA-G-8082-22 Ch. 3 · ACS knowledge area: Aviation Weather Sources and Effects · From the Aviation Weather practice bank (WEA-060).