What should be the increase in approach speeds when landing with ice on the airframe?

When landing with ice on the airframe, it is essential to increase the approach speed to ensure safe handling characteristics. Ice can significantly affect the aerodynamic properties of an aircraft, leading to reduced lift and increased drag. These changes can cause issues with control and increase the risk of stall if adequate speeds are not maintained.

An increase of 20% to 25% in approach speeds is generally recommended for aircraft operating with ice contamination. This range helps to compensate for the lower performance caused by the ice and ensures that the aircraft remains controllable during the critical phases of landing. The increase provides a margin for safety as it takes into account the potential for reduced lift and altered stall characteristics associated with ice accumulation.

Understanding and applying this information is crucial for pilots, as it directly impacts the ability to land safely in icy conditions.