What is the temperature limit for anti-icing system automatic operation?

What is the temperature limit for anti-icing system automatic operation?

• A. No temperature limit
• B. 5°C
• C. -18°C
• D. 0°C

Answer: (A)

Anti-icing auto operation is driven by ice-detection sensors, not by a fixed outside air temperature. When the system is in AUTO, it activates as soon as icing is detected, regardless of ambient temperature. That’s why there is no temperature limit for automatic operation. The other temperatures would incorrectly suggest a threshold where icing could form or be prevented based solely on ambient temperature, which isn’t how automatic anti-ice is designed to function.

Anti-icing auto operation is driven by ice-detection sensors, not by a fixed outside air temperature. When the system is in AUTO, it activates as soon as icing is detected, regardless of ambient temperature. That’s why there is no temperature limit for automatic operation. The other temperatures would incorrectly suggest a threshold where icing could form or be prevented based solely on ambient temperature, which isn’t how automatic anti-ice is designed to function.