When the ambient temperature is -30°C or below, what must be verified about the bulk fuel temperature before flight?

When the ambient temperature is -30°C or below, it is essential to verify that the bulk fuel temperature is above -29°C before flight to ensure proper fuel performance and reduce the risk of fuel-related issues. At extremely low temperatures, the characteristics of fuel can change, leading to potential problems such as fuel gelling or icing, which could significantly affect engine performance and reliability.

Maintaining the bulk fuel temperature above -29°C helps to ensure that the fuel remains in a proper state for operation, thereby minimizing the risk of engine malfunctions during flight. This is particularly critical in maintaining safe operational procedures, as inadequate fuel temperature may compromise the safety and effectiveness of the flight.

In colder conditions, the properties of the fuel must be monitored closely, and adhering to this requirement supports safe flying operations.