Takeoff is prohibited if engine fuel temperature indications are below what temperature?

Takeoff is prohibited if engine fuel temperature indications are below 5°C because this temperature threshold is important for ensuring proper fuel flow and preventing engine malfunctions. Fuel that is too cold can lead to issues such as increased viscosity, which can hinder the fuel's ability to atomize properly in the engine. This can result in poor combustion, leading to a decrease in engine performance and potentially dangerous conditions during takeoff. Adhering to this temperature limit helps ensure the reliability and safety of the engine operation during critical phases such as takeoff.