According to T6 Standards, what is required if icing is forecast for the planned route of flight?

The requirement to adjust the mission profile and fuel requirements accordingly when icing is forecast for the planned route of flight is critical for ensuring safety and operational effectiveness. Icing conditions can significantly impact aircraft performance, including lift, drag, and engine performance. By changing the mission profile, which could involve altering altitude or flight path, the pilot can potentially avoid areas where icing is most severe. Additionally, adjusting fuel requirements is essential since the aircraft may need to allocate more fuel for potential diversions or extended flight times due to changes in the planned route.

In contrast, proceeding without any alterations may expose the aircraft to hazardous conditions that could lead to safety incidents. Flying only if temperatures are above freezing does not account for the possibility of encountering icing conditions at higher altitudes or in clouds where temperatures might be below freezing despite surface temperatures being higher. Lastly, continuing on course if visual flight is possible doesn't address the risks presented by potential icing, which could lead to significant aerodynamic issues even in good visibility conditions. Thus, the most responsible action is to adjust the mission profile and fuel requirements as needed.