Which type of aircraft fuel is known for having the highest flashpoint and the slowest rate of flame spread?

The type of aircraft fuel known for having the highest flashpoint and the slowest rate of flame spread is kerosene. Kerosene, which includes fuels such as Jet A, typically has a higher flashpoint than gasoline and diesel, making it less volatile and reducing the risk of ignition at normal temperatures. The flashpoint of kerosene is around 38-72°C (around 100-160°F), which is significantly higher than that of gasoline or diesel.

In terms of flame spread, kerosene is designed to burn more slowly than gasoline, allowing for a controlled burn, which is critical in managing fire incidents involving aircraft. This characteristic is particularly important for Aircraft Rescue and Fire Fighting operations, where the goal is to contain and combat fires effectively while minimizing risk to rescuers and victims.

Gasoline, in contrast, has a much lower flashpoint and a fast rate of flame spread, making it more hazardous in fire situations. Diesel has a similar flashpoint to kerosene but can be more difficult to ignite under certain conditions. Jet A is a type of kerosene, but it generally has a flashpoint in line with kerosene, not exceeding it, which is why kerosene is considered the answer regarding the