What is described as the most hazardous aspect of structural icing?

• A. The massive weight increase it imposes on the airplane's structure
• B. The aerodynamic effect it has on the airplane
• C. It increases fuel consumption
• D. It reduces visibility

Answer: (A)

Structural icing adds mass to the airplane, so the biggest safety concern is the extra weight it imposes on the airframe. That heavier load increases wing loading, raises stall speed, and reduces maneuvering and climb capability. More importantly, the added weight pushes the aircraft toward its structural design limits, increasing the risk of overstress or failure if icing continues or a maneuver is required in icing conditions. The aerodynamic effects and higher fuel use stem from the same ice, but they are secondary to the direct danger of compromising the airframe’s structural integrity. Reduced visibility is a nuisance rather than the primary safety threat in this context.