How do anti-ice and de-ice systems operate on the 737?

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Multiple Choice

How do anti-ice and de-ice systems operate on the 737?

Anti-ice and de-ice work together to manage ice: anti-ice is the preventive side, heating surfaces so ice doesn’t form in the first place, while de-ice is the removal side, used to melt or shed ice that has already bonded to the surfaces. On the 737 you have both systems available, and you use them based on icing conditions. If icing is forecast or detected, anti-ice is turned on to keep critical surfaces—like the wing leading edges and engine inlets—from accumulating ice. If ice does form despite prevention, the de-ice function is used to remove it and restore performance and control. This dual approach is essential because prevention alone can’t always stop ice in heavier conditions, and removal alone wouldn’t prevent ice from forming in the first place.

Anti-ice and de-ice work together to manage ice: anti-ice is the preventive side, heating surfaces so ice doesn’t form in the first place, while de-ice is the removal side, used to melt or shed ice that has already bonded to the surfaces. On the 737 you have both systems available, and you use them based on icing conditions. If icing is forecast or detected, anti-ice is turned on to keep critical surfaces—like the wing leading edges and engine inlets—from accumulating ice. If ice does form despite prevention, the de-ice function is used to remove it and restore performance and control. This dual approach is essential because prevention alone can’t always stop ice in heavier conditions, and removal alone wouldn’t prevent ice from forming in the first place.

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