In the event of ice accumulation, by how many KIAS must approach speeds be increased?

In conditions where ice accumulation occurs on an aircraft, it is essential to adjust approach speeds to ensure safe handling and performance. Increasing approach speeds by 10 KIAS accounts for the added weight and altered aerodynamic characteristics of the aircraft due to ice accumulation. Ice can affect lift generation, control response, and stall speed, increasing the risk of stalling during critical phases of flight.

By increasing the approach speed by this specific amount, the pilot ensures that the aircraft remains well within its safe operating margins, maintaining adequate control and responsiveness. This adjustment helps compensate for any reduction in the aircraft's performance due to the ice, allowing for a more stable approach and a safer landing.