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Which risk increases when aircraft experience icing conditions?

A)Reduced control surface effectiveness
B)Increased engine combustion efficiency
C)Improved radio communication clarity
D)Elevated fuel tank ullage pressure

💡 Explanation

Ice accretion changes the airfoil shape; this causes flow separation because adverse pressure gradient exceeds the boundary layer's ability to remain attached therefore severely degrading lift and control effectiveness on control surfaces rather than improving other irrelevant systems.

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