The 787's icing protection includes engine and airframe protections. What is the primary purpose of these protections?

• A. Protect engine and airframe from ice accumulation
• B. Increase engine thrust during icing
• C. Reduce fuel consumption
• D. Improve radar performance

Answer: (A)

Ice buildup on engine inlets and the aircraft surface can seriously disrupt airflow, reduce lift, increase drag, and even cause engine performance issues or ice shedding that could damage the airplane. The icing protection on the 787 is aimed at preventing that ice from forming on those surfaces, keeping engine intake and airframe aerodynamics clean so performance and safety are maintained in icing conditions. It accomplishes this by warming critical areas (the leading edges and engine inlets) so ice cannot accumulate, which aligns with the aircraft’s electric icing protection approach. This protection isn’t about boosting thrust, cutting fuel use, or improving radar performance; its purpose is to keep ice from forming on the engines and airframe.