Which durations are available for surface de-ice timer cycles?

• A. 1 minute and 2 minutes
• B. 1 minute and 3 minutes
• C. 2 minutes and 3 minutes
• D. 3 minutes and 5 minutes

Answer: (B)

The main point is understanding how the surface de-ice timer works: it offers two preset durations to control how long the de-icing action stays active during a cycle. The two available durations are one minute and three minutes. This setup gives you quick, simple options to match icing severity—use the shorter one for light icing or a brief de-ice pass, and the longer one when icing is more persistent or you’re treating larger surface areas. When the timer reaches the selected duration, the system turns off, preventing unnecessary de-icing fluid use and potential over-application. That’s why the correct option lists 1 minute and 3 minutes.