The anti-ice systems will automatically operate when icing conditions exist and the mode selector is in which position?

The anti-ice systems will automatically operate when icing conditions exist and the mode selector is in which position?

• A. AUTO
• B. MANUAL
• C. OFF
• D. ON

Answer: (A)

Auto mode is the setting that lets the anti-ice system engage on its own in response to detected icing. When icing conditions exist, sensors (ice detectors) signal the system, and it automatically activates the appropriate anti-ice protection without pilot input. That automatic behavior is exactly what the statement describes. In manual mode, the pilot must switch anti-ice on themselves, so it won’t automatically start with icing. Off disables the system entirely, and On keeps anti-ice on regardless of detected icing, which isn’t automatic reaction to conditions. So Auto is the setting that matches automatic operation based on icing conditions.

Auto mode is the setting that lets the anti-ice system engage on its own in response to detected icing. When icing conditions exist, sensors (ice detectors) signal the system, and it automatically activates the appropriate anti-ice protection without pilot input. That automatic behavior is exactly what the statement describes.

In manual mode, the pilot must switch anti-ice on themselves, so it won’t automatically start with icing. Off disables the system entirely, and On keeps anti-ice on regardless of detected icing, which isn’t automatic reaction to conditions. So Auto is the setting that matches automatic operation based on icing conditions.