Which deicing/anti-icing method accomplishes both deicing and anti-icing in a single fluid application?

• A. Two-step
• B. One-step
• C. Mixed-step
• D. None

Answer: (B)

This question tests how a single spray can both remove ice now and prevent ice from forming again later. One-step fluids are formulated to do both tasks in one application: they melt and shed existing ice during the spray, and, as the fluid coats the surface, leave a protective anti-icing film that delays re-icing for a holdover period. This means you don’t need a separate anti-icing application after deicing, unlike a two-step process that uses one product to deice and a second to anti-ice. The one-step approach is the best fit because it achieves both goals in a single action, simplifying operations and reducing ramp time.