What is the minimum fuel tank temperature permissible?

The minimum fuel tank temperature permissible is -37°C. This temperature is established to ensure that the fuel remains in a liquid state and does not lead to issues such as fuel thickening or crystallization, which can negatively impact engine performance and fuel flow.

Operating at temperatures above this limit ensures that the fuel system functions properly and prevents potential damage to critical engine components. The specifications are in place to comply with safety and efficiency standards, ensuring that aircraft or vehicles operate within safe temperature limits to maintain optimal performance.

Choosing a temperature lower than -37°C could lead to hazardous conditions that affect not only the fuel's properties but also the overall safety of the operation.