The wing anti-ice system can be used to

The wing anti-ice system can be used to

• A. prevent ice
• B. remove ice
• C. prevent or remove
• D. neither

Answer: (C)

Wing leading-edge anti-ice heats the surface to keep it above the freezing point, so ice cannot form. If ice has already started to form, the same heating can melt it, causing the ice to detach. Because it both prevents buildup and can remove existing ice, the system covers both actions. That’s why “prevent or remove ice” is the best description. The other options are limited to one function or incorrect, since the anti-ice system is capable of both prevention and de-icing when icing conditions are present.

Wing leading-edge anti-ice heats the surface to keep it above the freezing point, so ice cannot form. If ice has already started to form, the same heating can melt it, causing the ice to detach. Because it both prevents buildup and can remove existing ice, the system covers both actions. That’s why “prevent or remove ice” is the best description. The other options are limited to one function or incorrect, since the anti-ice system is capable of both prevention and de-icing when icing conditions are present.